A transfemoral (AK) prosthesis whose TKA line passes in front of the knee joint axis is inherently stable.
A transfemoral (AK) prosthesis whose TKA line passes in front of the knee joint axis is inherently stable.
A transfemoral (AK) prosthesis whose TKA line passes through the knee joint axis is less stable, but affords the wearer more voluntary control over knee function.