An orthopaedic fixation frame apparatus includes a pair of spaced apart support members such as circular rings, plates, or the like supported by a plurality of struts that span therebetween. One end of the struts adjacent the upper ring is provided with a position adjusting member that forms an interface...http://www.google.fr/patents/US6129727?utm_source=gb-gplus-shareBrevet US6129727 - Orthopaedic spatial frame apparatus
