US3320951A - Intramedullary prostheses - Google Patents
Intramedullary prostheses Download PDFInfo
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- US3320951A US3320951A US416282A US41628264A US3320951A US 3320951 A US3320951 A US 3320951A US 416282 A US416282 A US 416282A US 41628264 A US41628264 A US 41628264A US 3320951 A US3320951 A US 3320951A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/367—Proximal or metaphyseal parts of shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
- A61F2002/30708—Means for distinguishing between left-sided and right-sided devices, Sets comprising both left-sided and right-sided prosthetic parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
- A61F2002/30785—Plurality of holes parallel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
- A61F2002/3627—Necks with lateral apertures, holes or openings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
- A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2002/3678—Geometrical features
- A61F2002/368—Geometrical features with lateral apertures, bores, holes or openings, e.g. for reducing the mass, for receiving fixation screws or for communicating with the inside of a hollow shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4619—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0084—Means for distinguishing between left-sided and right-sided devices; Sets comprising both left-sided and right-sided prosthetic parts
Definitions
- FIG. 2 P. WITTEBOL May 23, 1967 INTRAMEDULLARY PROSTHESES Filed Dec. '7, 1964 FIG. 2
- FIG. 1 A first figure.
- the present invention relates to intramedullary prostheses for the hip joint.
- the metal intramedullary prosthesis has gained a firm footing in the surgery of the hip joint.
- the metal intramedullary prosthesis according to the present invention is provided with a globular head, a stem having an extended shape, and a connecting portion between the globular head and the stem of such a length that the center of the globular head is positioned in the center of the natural hip joint.
- the center of said globular head lies in a plane that encloses an angle with the longitudinal medial plane of the flat extended stern, whereby the supporting face at the upper end of the stem is positioned perpendicularly to said plane through said head.
- a flat, long stem guarantees optimum resistance to rotation.
- a prosthesis is provided which offers the possibility of anatomical normalization.
- the improved prosthesis has a stem longer and heavier than known prostheses. Since a complete normalization of the height is practically never obtained with prostheses of the Moore type, the neck of the prosthesis according to the present invention has been lengthened and, importantly, the neck is connected to the stem at an angle.
- FIG. 1 is a front elevational view of an intramedullary prosthesis according to the present invention.
- FIG. 2 is a side elevational view of the prosthesis of FIG. 1.
- FIGS. 1 and 2. illustrating a prosthesis constructed according to the present invention, includes a stem 4, a neck 5, a head 6 and a supporting surface or plane 7 located at the upper end of the stem 4, between it and the neck 5.
- the stem 4 as shown in FIG. 2 has an extended width throughout its length so as to provide optimum resistance to rotation in the femoral shaft.
- the neck 5, as shown in both FIGS. 1 and 2 extends upwardly with respect to the stem 4 and the surface 7 so as to provide substantially complete normalization of the height of the patient, which result has never been achieved with known prostheses.
- the globular head 6 is connected at an angle to the stem 4 through the neck 5. This angle is apparent from the relationship shown in FIG. 1 between the stem 4 and the head 6 and the showing of the support surface 7 in FIG. 2, which engages the residual neck of the femur (not shown) and is substantially perpendicular to the direction of the pressure applied to the prosthesis.
- the prosthesis of the present invention When the prosthesis of the present invention is used to replace the head and neck portion of .a femur with a fractured neck, the postoperative normalization of the function of the hip joint is rapid because the patients movements with the substituted prosthesis are natural. There is no tendency to exorotation which often occurs with previously known types of prostheses.
- FIGS. 1 and 2 are referred to respectively as front and side views, it is apparent that a line through the upper portion of the stem 4, neck and head 6 extends inwardly, upwardly and forwardly with respect to the upper portion of the femur, and that the illustrated prosthesis is particularly constructed and arranged for the right femur.
- a metal intramedullary prosthesis for a fracture of the femoral neck in the hip joint comprising a widelyextending, upright, flat stem and a prosthetic globular head connected thereto by a neck portion having a supporting face at the upper end of the stem, said supporting face being positioned substantially perpendicularly to the direction of pressure to be applied by it during use, the center of the globular head being positioned outside the longitudinal axis of the stem, the connecting neck portion between the head and the stern having such a length that the center of the globular head lies in a plane perpendicular to said supporting face at the upper end of the stern that encloses an angle with the longitudinal medial plane of the flat stem.
- a metal intr-amedullary prosthesis for a fracture of the femoral neck in the hip joint to be substituted for the head and adjacent neck portion of the femur comprising a wide, upright, flat stem and a prosthetic globular head connected thereto by a neck portion having a supporting face at the upper end of the stern, said supporting surface being positioned substantially perpendicularly to the direction of pressure to be applied by it during use, the center of the globular head being located outside the longitudinal axis of the stem, the globular head extending from the neck to a position that a plane through the neck portion and the center of the globular head encloses an angle with a longitudinal medial plane extending edgewise through the flat stem. 7 3.
- a metal intramedullary prosthesis for a fracture of the femoral neck in the hip joint comprising a wide, flat, upright stern and a prosthetic globular head connected thereto by a neck portion having a supporting surface at the upper end of the stem, said supporting surface being positioned substantially perpendicularly to the direction of pressure from the globular head, the center of the globular head being positioned outside of a longitudinal medial plane extending ed gewise through the flat stern, and the connecting neck portion between the head and the stern extending upwardly, inwardly and forwardly with respect to the upper portion of the stem.
Description
P. WITTEBOL May 23, 1967 INTRAMEDULLARY PROSTHESES Filed Dec. '7, 1964 FIG. 2
FIG. 1
INVENTOR Poul Winebol I W I I ATTO NEYS United States Patent Office 3,320,951 Patented May 23, 1967 3,320,951 INTRAMEDULLARY PROSTHESES Paul Wittebol, Dijsselhofplantsoen 4, Amsterdam, Netherlands Filed Dec. 7, 1964, Ser. No. 416,282 Claims priority, application Great Britain, Apr. 21, 1964, 16,504/ 64 Claims. (Cl. 128-92) The present invention relates to intramedullary prostheses for the hip joint. The metal intramedullary prosthesis has gained a firm footing in the surgery of the hip joint.
The results obtained with prostheses of the Moore type may on the whole be regarded as very favorable. Those prostheses, however, were only used in cases of recent fracture of the femoral neck in patients of advanced age and sometimes also in younger patients in whom an earlier treatment, aimed at consolidation of the fracture of the neck had failed and had resulted either in pseudarthrosis or in necrosis of the femoral head.
The indications therefore were rather limited, but it soon appeared that there was a distinct ditference between the results in cases where the recent fracture had been treated with a prosthesis and those in which the prosthesis was only applied later on. In the latter group, the results were less favorable than in the former. Nor is this surprising. Owing to the protracted inactivity and the deformation of the hip joint during the period preceding the application of the prosthesis, the risk of posttraumatic arthrosis is much greater and the shortening and induration of the soft parts surrounding the joint undoubtedly also contribute to the delay of the rehabilitation process.
Another factor was that the patients in whom the prostheses were applied secondarily, were on the average 68 years old, so that on the whole heavier demands were made of the joint.
This distinct difference in results means that caution is indicated in connection with the application of known prostheses for the femoral head and neck.
In elderly persons in whom the joint is not often used for weight-bearing, the imperfections of these known prostheses may not become apparent. In younger subects, on the other hand, in whom one may expect a heavier and more protracted stress on the point, some failures will be unavoidable.
Experience with prostheses of the Moore type has made surgeons and other familiar wit-h its deficiencies.
While the Moore prosthesis has a wide, flat stem and can be firmly fixed in the femoral shaft, it is impossible with the Moore prosthesis to restore the correct angle of anteversion. It has been found that it is impossible even by correct preparation of the medullary cavity, to place the Moore or other known types of femoral prostheses in the anteversion position desired by the surgeon. The medullary cavity at the level of the lesser trochanter, where the prosthesis finds most of its support, is fiat anteriorly, in a frontal plane. It is impossible to give this cavity a different direction without sacrificing part of the cortical layer of the bone at this site.
It is possible, on the other hand, to widen the medullary cavity of the proximal femur by fraising to such an extent that the stem of the prosthesis could be placed obliquely in it, obliquely, that is, in reference to the anterior surface of the femur. However, this would cause the prosthesis to lose its indispensable stability, and rotation would then always occur in a posterior direction i.e. in the sense of retroversion, which would favor and cause luxation of the prosthesis.
The loss of anteversion after prosthetic replacement of the femoral head is a more serious objection than many surgeons feel inclined to admit. Walking with the leg in exorotation, rapid fatigue, pain in the musculature of the hip and disorders of the knee are largely brought about by the absence of the normal anteversion. A tacit admission of the impossibility of applying the prosthesis at the correct angle of anteversion lies in the fact that a known prosthesis is often used in combination with an artificial resin that is still plastic. The proximal femur is scooped out to such a degree that the prosthesis can be inserted in the desired position, and the remaining space is then filled with the plastic mass that is left to harden in the body.
In itself, the attempt to accomplish an optimal position of the prosthesis is praiseworthy. However, the experiences with the acrylic prosthesis in the still recent past (1952-1956) have not been of such a kind that failures are excluded. Non-polymerized remnants of the monomer, which is highly toxic, may very well have caused the enormous destruction of bone that has been observed in cases treated with the old acrylic prosthesis.
When, after the use of plastic material for the application of the prosthesis, the whole of the proximal femur is destroyed in a similar way, reconstruction becomes very difficult indeed.
In order to overcome the disadvantages described above in a practical and simple way, the metal intramedullary prosthesis according to the present invention is provided with a globular head, a stem having an extended shape, and a connecting portion between the globular head and the stem of such a length that the center of the globular head is positioned in the center of the natural hip joint. In this structure, according to the invention, the center of said globular head lies in a plane that encloses an angle with the longitudinal medial plane of the flat extended stern, whereby the supporting face at the upper end of the stem is positioned perpendicularly to said plane through said head.
A flat, long stem guarantees optimum resistance to rotation. A supporting plane between the prosthesis and the residual neck of the femur approximately perpendicular to the direction of the pressure, greatly reduces the tendency to shifting and tilting and thereby again increases the stability of the prosthesis as a whole. On the basis of these features a prosthesis is provided which offers the possibility of anatomical normalization.
The improved prosthesis has a stem longer and heavier than known prostheses. Since a complete normalization of the height is practically never obtained with prostheses of the Moore type, the neck of the prosthesis according to the present invention has been lengthened and, importantly, the neck is connected to the stem at an angle.
In order that the invention may be more clearly understood, reference will now be made to the accompanying drawings which show one embodiment thereof by way of example.
In the drawings:
FIG. 1 is a front elevational view of an intramedullary prosthesis according to the present invention, and
FIG. 2 is a side elevational view of the prosthesis of FIG. 1.
Referring to the drawings, FIGS. 1 and 2., illustrating a prosthesis constructed according to the present invention, includes a stem 4, a neck 5, a head 6 and a supporting surface or plane 7 located at the upper end of the stem 4, between it and the neck 5.
The stem 4, as shown in FIG. 2, has an extended width throughout its length so as to provide optimum resistance to rotation in the femoral shaft. The neck 5, as shown in both FIGS. 1 and 2, extends upwardly with respect to the stem 4 and the surface 7 so as to provide substantially complete normalization of the height of the patient, which result has never been achieved with known prostheses.
Furthermore, this result is favored by the fact that the globular head 6 is connected at an angle to the stem 4 through the neck 5. This angle is apparent from the relationship shown in FIG. 1 between the stem 4 and the head 6 and the showing of the support surface 7 in FIG. 2, which engages the residual neck of the femur (not shown) and is substantially perpendicular to the direction of the pressure applied to the prosthesis. These relationships greatly reduce the tendency to shifting and tilting and increase the stability of the prosthesis as a whole.
When the prosthesis of the present invention is used to replace the head and neck portion of .a femur with a fractured neck, the postoperative normalization of the function of the hip joint is rapid because the patients movements with the substituted prosthesis are natural. There is no tendency to exorotation which often occurs with previously known types of prostheses.
While FIGS. 1 and 2 are referred to respectively as front and side views, it is apparent that a line through the upper portion of the stem 4, neck and head 6 extends inwardly, upwardly and forwardly with respect to the upper portion of the femur, and that the illustrated prosthesis is particularly constructed and arranged for the right femur.
In practice an anteversion angle of 13-15 produces the best result.
I claim:
1. A metal intramedullary prosthesis for a fracture of the femoral neck in the hip joint, comprising a widelyextending, upright, flat stem and a prosthetic globular head connected thereto by a neck portion having a supporting face at the upper end of the stem, said supporting face being positioned substantially perpendicularly to the direction of pressure to be applied by it during use, the center of the globular head being positioned outside the longitudinal axis of the stem, the connecting neck portion between the head and the stern having such a length that the center of the globular head lies in a plane perpendicular to said supporting face at the upper end of the stern that encloses an angle with the longitudinal medial plane of the flat stem.
2. A metal intr-amedullary prosthesis for a fracture of the femoral neck in the hip joint to be substituted for the head and adjacent neck portion of the femur, comprising a wide, upright, flat stem and a prosthetic globular head connected thereto by a neck portion having a supporting face at the upper end of the stern, said supporting surface being positioned substantially perpendicularly to the direction of pressure to be applied by it during use, the center of the globular head being located outside the longitudinal axis of the stem, the globular head extending from the neck to a position that a plane through the neck portion and the center of the globular head encloses an angle with a longitudinal medial plane extending edgewise through the flat stem. 7 3. A metal intramedullary prosthesis for a fracture of the femoral neck in the hip joint, comprising a wide, flat, upright stern and a prosthetic globular head connected thereto by a neck portion having a supporting surface at the upper end of the stem, said supporting surface being positioned substantially perpendicularly to the direction of pressure from the globular head, the center of the globular head being positioned outside of a longitudinal medial plane extending ed gewise through the flat stern, and the connecting neck portion between the head and the stern extending upwardly, inwardly and forwardly with respect to the upper portion of the stem.
4. A prosthesis as claimed in claim 3, in which the center of the globular head is located anteriorly of said plane extending edgewise through the stem.
5. A prothesis as claimed in claim 3, in which the Wide, flat sides of the stem face respectively anteriorly and posteriorly, and the center of the globular head is located anteriorly relative to the upper portion of the stern.
Austenal Laboratories ad of Moore Type Hip Prothesis in The Journal of Bone and Joint Surgery for January 1962 page 4.
RICHARD A. GAUDET, Primary Examiner.
J. W. HINEY, Assistant Examiner.
Claims (1)
1. A METAL INTRAMEDULLARY PROSTHESIS FOR A FRACTURE OF THE FEMORAL NECK IN THE HIP JOINT, COMPRISING A WIDELYEXTENDING, UPRIGHT, FLAT STEM AND A PROSTHETIC GLOBULAR HEAD CONNECTED THERETO BY A NECK PORTION HAVING A SUPPORTING FACE AT THE UPPER END OF THE STEM, SAID SUPPORTING FACE BEING POSITIONED SUBSTANTIALLY PERPENDICULARLY TO THE DIRECTION OF PRESSURE TO BE APPLIED BY IT DURING USE, THE CENTER OF THE GLOBULAR HEAD BEING POSITIONED OUTSIDE THE LONGITUDINAL AXIS OF THE STEM, THE CONNECTING NECK PORTION BETWEEN THE HEAD AND THE STEM HAVING SUCH A LENGTH THAT THE CENTER OF THE GLOBULAR HEAD LIES IN A PLANE PERPENDICULAR TO SAID SUPPORTING FACE AT THE UPPER END OF THE STEM THAT ENCLOSES AN ANGLE WITH THE LONGITUDINAL MEDIAL PLANE OF THE FLAT STEM.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB16504/64A GB1030145A (en) | 1964-04-21 | 1964-04-21 | Improvements in or relating to femoral prostheses |
Publications (1)
Publication Number | Publication Date |
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US3320951A true US3320951A (en) | 1967-05-23 |
Family
ID=10078537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US416282A Expired - Lifetime US3320951A (en) | 1964-04-21 | 1964-12-07 | Intramedullary prostheses |
Country Status (6)
Country | Link |
---|---|
US (1) | US3320951A (en) |
CH (1) | CH439581A (en) |
DE (1) | DE1491246A1 (en) |
FR (1) | FR1432116A (en) |
GB (1) | GB1030145A (en) |
SE (1) | SE319266B (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3466670A (en) * | 1965-05-26 | 1969-09-16 | Tor Christiansen | Hip-joint prosthesis |
US3510883A (en) * | 1967-10-30 | 1970-05-12 | Robert F Cathcart | Joint prosthesis |
US3740769A (en) * | 1971-02-11 | 1973-06-26 | E Haboush | Prosthesis for hip joints |
US3815590A (en) * | 1973-05-02 | 1974-06-11 | W Deyerle | Off-set trial prosthesis device and method for hip prosthesis surgery |
US3818514A (en) * | 1971-08-09 | 1974-06-25 | Thackray C F Ltd | Femoral prosthesis with removable protective sheath |
US3874003A (en) * | 1972-04-06 | 1975-04-01 | Oscobal Ag | Artificial hip joint |
USD243286S (en) * | 1975-06-02 | 1977-02-01 | William Minor Deyerle | Femoral hip prosthesis component for total and sub-total hip replacement systems |
US4422187A (en) * | 1980-01-14 | 1983-12-27 | Sulzer Brothers Limited | Shank for a joint endoprosthesis |
US4589883A (en) * | 1983-06-06 | 1986-05-20 | Pfizer Hospital Products Group, Inc. | Femoral hip prosthesis |
US5019106A (en) * | 1988-08-15 | 1991-05-28 | Sulzer Brothers Limited | Fixing stem for a prosthesis |
US5246461A (en) * | 1990-11-27 | 1993-09-21 | Laboratorium fur experimentelle Chirurgie, Forschungsinstitut, Davos | Femoral twin-set for a hip endoprosthesis |
US6171341B1 (en) * | 1996-08-02 | 2001-01-09 | Tornier Sa | Prosthesis for the upper extremity of the humerus |
US20040220670A1 (en) * | 2003-02-12 | 2004-11-04 | Sdgi Holdings, Inc. | Articular disc prosthesis and method for treating spondylolisthesis |
US20050021042A1 (en) * | 2003-07-21 | 2005-01-27 | Theirry Marnay | Instruments and method for inserting an intervertebral implant |
US20050085917A1 (en) * | 1999-07-02 | 2005-04-21 | Thierry Marnay | Intervertebral implant |
US20050251261A1 (en) * | 2004-05-05 | 2005-11-10 | Sdgi Holdings, Inc. | Artificial intervertebral disc for lateral insertion |
US20070239276A1 (en) * | 2006-04-07 | 2007-10-11 | Sdgi Holdings, Inc. | Artificial disc implants and associated methods and instrumentation |
US20080228276A1 (en) * | 2007-03-14 | 2008-09-18 | Warsaw Orthopedic, Inc. | Intervertebral Prosthesis, Instruments, and Methods of Implanting |
US20090182432A1 (en) * | 1999-06-04 | 2009-07-16 | Warsaw Orthopedic, Inc. | Artificial disc implant |
US7575600B2 (en) | 2004-09-29 | 2009-08-18 | Kyphon Sarl | Artificial vertebral disk replacement implant with translating articulation contact surface and method |
US7670377B2 (en) | 2003-11-21 | 2010-03-02 | Kyphon Sarl | Laterally insertable artifical vertebral disk replacement implant with curved spacer |
US20100076443A1 (en) * | 2006-07-31 | 2010-03-25 | Rudolph Bertagnoli | Drilling/milling guide and keel cut preparation system |
US20110027265A1 (en) * | 2007-08-31 | 2011-02-03 | The University Of Chicago | Methods and Compositions Related to Immunizing Against Staphylococcal Lung Diseases and Conditions |
US8998990B2 (en) | 2006-07-24 | 2015-04-07 | DePuy Synthes Products, LLC | Intervertebral implant with keel |
US10182831B2 (en) | 2003-04-28 | 2019-01-22 | Centinel Spine Llc | Instruments and method for preparing an intervertebral space for receiving an artificial disc implant |
US11890202B2 (en) | 2007-06-20 | 2024-02-06 | 3Spine, Inc. | Spinal osteotomy |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH529552A (en) * | 1970-10-13 | 1972-10-31 | Mathys Robert | Femoral neck prosthesis |
CH622423A5 (en) * | 1977-10-12 | 1981-04-15 | Sulzer Ag | |
DE2931750C2 (en) * | 1979-08-04 | 1986-06-19 | Howmedica International, Inc. Zweigniederlassung Kiel, 2300 Kiel | One-piece thigh part of a hip joint endoprosthesis |
DE3015690A1 (en) * | 1980-04-24 | 1981-10-29 | Waldemar Link (Gmbh & Co), 2000 Hamburg | HIP JOINT PROSTHESIS WITH A SHAFT TO BE INSERTED IN THE MARKING CHANNEL OF THE THIGH BONE |
DE29705498U1 (en) * | 1997-03-26 | 1998-07-23 | Link Waldemar Gmbh Co | Hip prosthesis |
US6783553B2 (en) * | 2001-10-24 | 2004-08-31 | James B. Grimes | Prosthesis |
US20040158329A1 (en) | 2003-02-10 | 2004-08-12 | Waldemar Link (Gmbh & Co.) | Hip joint prosthesis with shaft inserted into femur |
EP1623685A1 (en) | 2004-08-06 | 2006-02-08 | WALDEMAR LINK GmbH & Co. KG | Hip prosthesis with stem for implantation into the femur |
ITMI20121334A1 (en) * | 2012-07-31 | 2014-02-01 | Uni Degli Studi Brescia | FEMORAL STEM FOR HIP PROSTHESIS. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3228393A (en) * | 1962-08-28 | 1966-01-11 | Arthur A Michele | Hip replacement prosthesis |
-
1964
- 1964-04-21 GB GB16504/64A patent/GB1030145A/en not_active Expired
- 1964-12-07 US US416282A patent/US3320951A/en not_active Expired - Lifetime
-
1965
- 1965-01-13 DE DE19651491246 patent/DE1491246A1/en active Pending
- 1965-03-22 CH CH392865A patent/CH439581A/en unknown
- 1965-04-09 SE SE4676/65A patent/SE319266B/xx unknown
- 1965-04-21 FR FR14043A patent/FR1432116A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3228393A (en) * | 1962-08-28 | 1966-01-11 | Arthur A Michele | Hip replacement prosthesis |
Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3466670A (en) * | 1965-05-26 | 1969-09-16 | Tor Christiansen | Hip-joint prosthesis |
US3510883A (en) * | 1967-10-30 | 1970-05-12 | Robert F Cathcart | Joint prosthesis |
US3740769A (en) * | 1971-02-11 | 1973-06-26 | E Haboush | Prosthesis for hip joints |
US3818514A (en) * | 1971-08-09 | 1974-06-25 | Thackray C F Ltd | Femoral prosthesis with removable protective sheath |
US3874003A (en) * | 1972-04-06 | 1975-04-01 | Oscobal Ag | Artificial hip joint |
US3815590A (en) * | 1973-05-02 | 1974-06-11 | W Deyerle | Off-set trial prosthesis device and method for hip prosthesis surgery |
USD243286S (en) * | 1975-06-02 | 1977-02-01 | William Minor Deyerle | Femoral hip prosthesis component for total and sub-total hip replacement systems |
US4422187A (en) * | 1980-01-14 | 1983-12-27 | Sulzer Brothers Limited | Shank for a joint endoprosthesis |
US4589883A (en) * | 1983-06-06 | 1986-05-20 | Pfizer Hospital Products Group, Inc. | Femoral hip prosthesis |
US5019106A (en) * | 1988-08-15 | 1991-05-28 | Sulzer Brothers Limited | Fixing stem for a prosthesis |
US5246461A (en) * | 1990-11-27 | 1993-09-21 | Laboratorium fur experimentelle Chirurgie, Forschungsinstitut, Davos | Femoral twin-set for a hip endoprosthesis |
US6171341B1 (en) * | 1996-08-02 | 2001-01-09 | Tornier Sa | Prosthesis for the upper extremity of the humerus |
US20090182432A1 (en) * | 1999-06-04 | 2009-07-16 | Warsaw Orthopedic, Inc. | Artificial disc implant |
US9526624B2 (en) | 1999-07-02 | 2016-12-27 | DePuy Synthes Products, Inc. | Intervertebral implant |
US8974530B2 (en) | 1999-07-02 | 2015-03-10 | DePuy Synthes Products, LLC | Intervertebral implant |
US20050085917A1 (en) * | 1999-07-02 | 2005-04-21 | Thierry Marnay | Intervertebral implant |
US8882839B2 (en) | 1999-07-02 | 2014-11-11 | DePuy Synthes Products, LLC | Intervertebral implant |
US20050267581A1 (en) * | 1999-07-02 | 2005-12-01 | Thierry Marnay | Intervertebral Implant |
US8795371B2 (en) | 1999-07-02 | 2014-08-05 | DePuy Synthes Products, LLC | Intervertebral implant |
US20070265707A1 (en) * | 1999-07-02 | 2007-11-15 | Thierry Marnay | Intervertebral implant |
US8506634B2 (en) | 1999-07-02 | 2013-08-13 | DePuy Synthes Products, LLC | Intervertebral implant |
US20040220670A1 (en) * | 2003-02-12 | 2004-11-04 | Sdgi Holdings, Inc. | Articular disc prosthesis and method for treating spondylolisthesis |
US20040220668A1 (en) * | 2003-02-12 | 2004-11-04 | Sdgi Holdings, Inc. | Method and device for correcting spondylolisthesis from the lateral approach |
US7850735B2 (en) | 2003-02-12 | 2010-12-14 | Warsaw Orthopedic, Inc. | Articular disc prosthesis and method for treating spondylolisthesis |
US20100324684A1 (en) * | 2003-02-12 | 2010-12-23 | Warsaw Orthopedic, Inc. | Spinal Prosthetic Joints |
US10182831B2 (en) | 2003-04-28 | 2019-01-22 | Centinel Spine Llc | Instruments and method for preparing an intervertebral space for receiving an artificial disc implant |
US20050021042A1 (en) * | 2003-07-21 | 2005-01-27 | Theirry Marnay | Instruments and method for inserting an intervertebral implant |
US8349017B2 (en) | 2003-07-21 | 2013-01-08 | Spine Solutions, Inc. | Instruments and method for inserting an intervertebral implant |
US7803162B2 (en) | 2003-07-21 | 2010-09-28 | Spine Solutions, Inc. | Instruments and method for inserting an intervertebral implant |
US20100331988A1 (en) * | 2003-07-21 | 2010-12-30 | Theirry Marnay | Instruments and Method For Inserting An Intervertebral Implant |
US7691146B2 (en) | 2003-11-21 | 2010-04-06 | Kyphon Sarl | Method of laterally inserting an artificial vertebral disk replacement implant with curved spacer |
US7670377B2 (en) | 2003-11-21 | 2010-03-02 | Kyphon Sarl | Laterally insertable artifical vertebral disk replacement implant with curved spacer |
US20050251261A1 (en) * | 2004-05-05 | 2005-11-10 | Sdgi Holdings, Inc. | Artificial intervertebral disc for lateral insertion |
US7575600B2 (en) | 2004-09-29 | 2009-08-18 | Kyphon Sarl | Artificial vertebral disk replacement implant with translating articulation contact surface and method |
US8066774B2 (en) | 2006-04-07 | 2011-11-29 | Warsaw Orthopedic, Inc. | Artificial disc implants and associated methods and instrumentation |
US20070239276A1 (en) * | 2006-04-07 | 2007-10-11 | Sdgi Holdings, Inc. | Artificial disc implants and associated methods and instrumentation |
US9387086B2 (en) | 2006-07-24 | 2016-07-12 | DePuy Synthes Products, Inc. | Intervertebral implant with keel |
US8998990B2 (en) | 2006-07-24 | 2015-04-07 | DePuy Synthes Products, LLC | Intervertebral implant with keel |
US9883950B2 (en) | 2006-07-24 | 2018-02-06 | Centinel Spine Llc | Intervertebral implant with keel |
US10583014B2 (en) | 2006-07-24 | 2020-03-10 | Centinel Spine, Llc | Intervertebral implant with keel |
US11690728B2 (en) | 2006-07-24 | 2023-07-04 | Centinel Spine, Llc | Intervertebral implant with keel |
US9254139B2 (en) | 2006-07-31 | 2016-02-09 | DePuy Synthes Products, Inc. | Drilling/milling guide and keel cut preparation system |
US8337500B2 (en) | 2006-07-31 | 2012-12-25 | Synthes Usa, Llc | Drilling/milling guide and keel cut preparation system |
US9717511B2 (en) | 2006-07-31 | 2017-08-01 | DePuy Synthes Products, Inc. | Drilling/milling guide and keel cut preparation system |
US9949746B2 (en) | 2006-07-31 | 2018-04-24 | Centinel Spine Llc | Drilling/milling guide and keel cut preparation system |
US20100076443A1 (en) * | 2006-07-31 | 2010-03-25 | Rudolph Bertagnoli | Drilling/milling guide and keel cut preparation system |
US20080228276A1 (en) * | 2007-03-14 | 2008-09-18 | Warsaw Orthopedic, Inc. | Intervertebral Prosthesis, Instruments, and Methods of Implanting |
US11890202B2 (en) | 2007-06-20 | 2024-02-06 | 3Spine, Inc. | Spinal osteotomy |
US20110027265A1 (en) * | 2007-08-31 | 2011-02-03 | The University Of Chicago | Methods and Compositions Related to Immunizing Against Staphylococcal Lung Diseases and Conditions |
Also Published As
Publication number | Publication date |
---|---|
CH439581A (en) | 1967-07-15 |
SE319266B (en) | 1970-01-12 |
DE1491246A1 (en) | 1969-05-14 |
FR1432116A (en) | 1966-03-18 |
GB1030145A (en) | 1966-05-18 |
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