Patent ID: 7438725

Claim:
A prosthetic knee joint, comprising: an endoskeletal knee chassis having a proximal segment and a distal segment, the proximal and distal segments being pivotally joined along an axis of rotation, the proximal segment including at least one posterior projection; a substantially tubular thigh cosmesis component having an upper end and a lower end, the lower end comprising a knee-ball section seating the proximal segment of the endoskeletal knee chassis; and a substantially tubular shin cosmesis component seating the distal segment of the endoskeletal knee chassis; wherein the thigh cosmesis component and the shin cosmesis component are pivotally joined along an axis of rotation that coincides with the axis of rotation of the endoskeletal knee chassis; and wherein the thigh cosmesis component includes a distal posterior opening that receives the proximal segment of the endoskeletal knee and includes at least one protrusion extending posteriorly into the distal posterior opening, the protrusion providing a seat for the at least one posterior projection of the proximal segment.