Leg prosthesis

摘要

A leg prosthesis wherein the prosthesis shaft and the transtibial part are connected by a prosthesis shaft adapter. The prosthesis shaft adapter is constructed as a compact one-part component with a liner (sleeve as inner prosthesis shaft adapter) of the amputation stump and with a rearward extension for the prosthesis receptacle connection. The prosthesis shaft adapter is designed such that, in addition to the rearward extension of 1 cm to 10 cm, the prosthesis receptacle connection is also angled and laterally offset. Advantageously, the leg prosthesis according to the invention has a relatively low weight due to the prosthesis shaft adapter as a connecting element. The leg prosthesis operates absolutely safely and can be efficiently produced. The fabrication of a leg prosthesis with an individual biomechanical fit to the patient is significantly facilitated, which also results in fewer faulty prostheses.

主权项

1. A leg prosthesis, comprising
a prosthesis shaft (5) including an integrated prosthesis shaft adapter (2), transtibial part (6) with a foot or with a foot and a knee joint assembly (7), wherein the prosthesis shaft adapter (2) is constructed as a compact monolithic one-part component for establishing a fitted connection between the prosthesis shaft (5) and the transtibial part (6), and including an integrated amputation stump receiving cup (8) with an integrated rearward extension (A), relative to the walk direction, on a walk line (12) of the walk direction or on a walk line (11) which is parallel thereto with a lateral offset (B), wherein the effective rearward extension (A) from a center line (9) of the amputation stump receiving cup (8), at a right angle to the amputation stump cup surface, to the center of a prosthesis receptacle connection (10) for the transtibial part (6) is dimensioned from 1 cm to 10 cm, and wherein the prosthesis receptacle connection (10) for the transtibial part (6) is constructed such that the centerline of the attached transtibial part (6), with or without a knee joint assembly (7) screwed thereto, extends with respect to the cup centerline (9) and an imaginary vertical alignment line (3) from the hip joint (1) to the midfoot (4) at an acute angle α from 5° to 20° thereto.