Metatarsal phalange prosthesis for big toe, has metatarsal implant including head whose inclined rear plane side forms preset angle with plane perpendicular to axis of anchoring rod

摘要

The prosthesis has a metatarsal implant (1) including head (6) whose inclined rear plane side (7) forms preset angle with a plane normal to an axis of an anchoring rod. An articular surface of the head and the rear side meet at a lower point of the implant. A distance between the axis of the rod and the lower point is determined, such that the head does not extend in the sesamoid grooves arranged on a lower base of a metatarsal. - Independent claims are also included for the following: (a) an identification supplementary for implementing metatarsal phalange prosthesis (b) a guiding supplementary of a metatarsal phalange (c) a phalange cut supplementary for implementing a metatarsal phalange prosthesis.