CA2658077A1 - Calcaneal plate - Google Patents

Calcaneal plate Download PDF

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Publication number
CA2658077A1
CA2658077A1 CA002658077A CA2658077A CA2658077A1 CA 2658077 A1 CA2658077 A1 CA 2658077A1 CA 002658077 A CA002658077 A CA 002658077A CA 2658077 A CA2658077 A CA 2658077A CA 2658077 A1 CA2658077 A1 CA 2658077A1
Authority
CA
Canada
Prior art keywords
plate
set forth
calcaneal
posterior
holes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002658077A
Other languages
French (fr)
Other versions
CA2658077C (en
Inventor
Dustin Ducharme
Bryan D. Den Hartog
Michael C. Mcglamry
Bharat M. Desai
David B. Kay
Lee A. Strnad
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orthohelix Surgical Designs Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2658077A1 publication Critical patent/CA2658077A1/en
Application granted granted Critical
Publication of CA2658077C publication Critical patent/CA2658077C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread

Abstract

The present invention is a fully contoured calcaneal plate having substantially no planar surfaces except at the origin. The contoured plate includes radiused sections, one extending inferior to superior is curved inferior to superior in a shape which is close to cylindrical and which approximates the shape of the cuboid bone. The second radiused section is curved in the vicinity of the anterior strut, and in particular at the inferior portion of the plate, to accommodate the peroneal tubercle. The plate has a rectangular or modified ovoid body section and a dog boned shaped tail with triangular placed holes for fixation.

Claims (15)

1. A calcaneal plate comprising an ovoid body portion having a superior plate segment, an anterior plate segment and an inferior plate segment, all adjacent and adjoining and defining an interior portion having at least one fenestration, the plate including a plurality of screw holes which accept screws for attachment of the plate to a bone, the plate further including an anterior tail portion extending inferiorly to superiorly which has a bone facing surface and the bone facing side of the anterior tail portion including a curve from the inferior to the superior direction, the curve having a radius between about 5 and about 30mm.
2. A calcaneal plate as set forth in claim 1 wherein the anterior tail portion includes a superior ear and an inferior ear and wherein each of the superior ear and the inferior ear includes a hole for a fixation member and the anterior tail portion includes a third hole to allow for triangular multiplanar fixation.
3. A calcaneal plate as set forth in claim 1 wherein the body portion has a generally uniform thickness .delta. and the body portion includes a posterior facet segment which has a thickness greater than .delta. to accommodate weight transfer from the tibia to the talus to the calcaneus.
4. A calcaneal plate as set forth in claim 3 wherein the posterior facet segment includes at least one hole for a fixation member.
5. A calcaneal plate as set forth in claim 1 wherein the body portion includes a translation slot.
6. A calcaneal plate has set forth in claim 1 further including a posterior strut and wherein the body portion includes two fenestrations with the posterior strut forming the anterior boundary of the posterior fenestration.
7. A calcaneal plate as set forth in claim 6 wherein the anterior tail portion includes a triangular fenestration.
8. A calcaneal plate as set for in claim 1 wherein the plate is fully contoured in three dimensions and has a surface that is capable of facing a calcaneus and which has two distinct radiused areas which flow into one another so as to correspond to the lateral aspect of the calcaneus around its perimeter.
9. A calcaneal plate as set forth in claim 8 wherein the plate includes a posterior facet segment and the posterior facet segment includes at least two holes for fixation members, and wherein at least one of the posterior facet holes is a locking hole.
10. A calcaneal plate as set forth in claim 9 wherein at least two of the holes of the posterior facet segment are locking holes and in which the angle of the thread holes are capable of forming a scaffold for a sub-chondral support.
11. A calcaneal plate as set forth in claim 10 wherein the posterior facet segment includes at least three holes.
12. A calcaneal plate as set forth in claim 9 further including a compression screw and wherein the one of the holes of the posterior facet segment does not include threads and accepts a compression screw.
13. A calcaneal plate as set forth in claim 8 wherein at least one of the radiused areas curves in the direction anterior to posterior relative to a lateral aspect of a calcaneus and the other is in the direction inferior to superior relative to the lateral aspect of a calcaneus.
14. A calcaneal plate as set forth in claim 1 having a posterior facet portion which is contoured for placement in the vicinity of a posterior facet and which provides support along the axis of loading of the ankle joint and includes at least one threaded hole inferior to the posterior facet to inhibit subsidence of an affected bone fragment after implantation of the plate.
15. A calcaneal plate as set forth in claim 14 wherein the posterior facet portion includes at least two threaded holes and the posterior facet portion includes at least one non-threaded hole.
CA2658077A 2006-07-18 2007-07-17 Calcaneal plate Expired - Fee Related CA2658077C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US83164706P 2006-07-18 2006-07-18
US60/831,647 2006-07-18
US88091007P 2007-01-17 2007-01-17
US60/880,910 2007-01-17
US11/879,118 2007-07-16
US11/879,118 US8057520B2 (en) 2006-07-18 2007-07-16 Calcaneal plate
PCT/US2007/016185 WO2008011018A2 (en) 2006-07-18 2007-07-17 Calcaneal plate

Publications (2)

Publication Number Publication Date
CA2658077A1 true CA2658077A1 (en) 2008-01-24
CA2658077C CA2658077C (en) 2012-01-17

Family

ID=38957319

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2658077A Expired - Fee Related CA2658077C (en) 2006-07-18 2007-07-17 Calcaneal plate

Country Status (8)

Country Link
US (1) US8057520B2 (en)
EP (1) EP2040631B1 (en)
AT (1) ATE527946T1 (en)
AU (1) AU2007275776B2 (en)
BR (1) BRPI0714325A2 (en)
CA (1) CA2658077C (en)
IL (1) IL196257A (en)
WO (1) WO2008011018A2 (en)

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Also Published As

Publication number Publication date
US20080021452A1 (en) 2008-01-24
ATE527946T1 (en) 2011-10-15
WO2008011018A3 (en) 2008-06-26
IL196257A0 (en) 2009-09-22
IL196257A (en) 2011-12-29
CA2658077C (en) 2012-01-17
US8057520B2 (en) 2011-11-15
EP2040631A2 (en) 2009-04-01
AU2007275776B2 (en) 2010-04-01
EP2040631A4 (en) 2010-09-22
EP2040631B1 (en) 2011-10-12
AU2007275776A1 (en) 2008-01-24
WO2008011018A2 (en) 2008-01-24
BRPI0714325A2 (en) 2013-04-02

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EEER Examination request
MKLA Lapsed

Effective date: 20140717