Patellar cutting apparatus for implanting a total knee prosthesis

摘要

According to the invention, the said apparatus comprises, on the one hand, a femoral test component (10) having a prosthetic trochlea (11), at least one lateral orifice (12) formed on at least one edge of the said femoral test component, and a central hole (13) formed at the centre of the said trochlea, and, on the other hand, an ancillary component (20) comprising a fixing stud (21) intended to cooperate with the said lateral orifice (12) of the femoral test component (10), a patellar blade (22) intended to be positioned bearing against the patella (1), a means (23) for centring the said blade with respect to the said central hole (13) of the prosthetic trochlea (11), means (24, 25) for displacing the patellar blade (22) permitting a movement transverse to the said trochlea (11) and an axial movement parallel to the central hole (13), means (26, 27) for blocking the said blade (22) in position, and means (100) for cutting the patella (1) parallel to the plane (P) of the said trochlea (11). Application to total knee prostheses. IMAGE