HIP PROSTHESIS INCLUDES A ROD, TO BE INSERTED INTO THE MEDULLARY CANAL OF THE FEMUR, THE PROXIMAL ZONE OF WHICH COMPRISES TWO ADJACENT SEGMENTS WITH OPPOSITE SPIRAL TWISTS

摘要

PCT No. PCT/FR95/01072 Sec. 371 Date Feb. 12, 1997 Sec. 102(e) Date Feb. 12, 1997 PCT Filed Aug. 10, 1995 PCT Pub. No. WO96/04868 PCT Pub. Date Feb. 22, 1996The prosthesis of the invention comprises a shaft (1) with its upper end (3) linked to a neck (2) connecting it to a spherical joint head. The shaft (1) comprises a proximal area (H1, H2) with a reversed spiral double twist, over a length substantially equal to one third or half of the length (H) of the shaft (1). The proximal segment (H2) of the proximal area and the distal area (H3) are generally rectilinear in the antero-posterior plane, while the distal segment (H1) of the proximal area is curved with the center offset frontwards. The invention provides a prosthesis that fits more effectively in the medullary channel and does not need cement to fix it.