Patent ID: 8808393

Claim:
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.