Knee rotational adapter

A prosthetic knee assembly, comprising:

• a knee joint for providing flexion and extension to upper and lower leg prostheses, and connecting to a lower leg prosthesis;
• a prosthetic adapter connected to an upper end of the knee joint, the prosthetic adapter having lower and upper connectors, the upper connector rotatably secured to the lower connector at a receiving hole, the lower connector having a first portion located on a first side of the receiving hole, a second portion located on a second side of the receiving hole, and a guide hole, the first and second portions located on opposite sides of the receiving hole in a transverse plane and arranged such that the guide hole extends completely within and is defined by a thickness of the lower connector from the first portion to the second portion, the prosthetic adapter arranged for connection to the upper leg prosthesis;
• and a lower component pivotally connecting the adapter to the knee joint,
• a locking mechanism for preventing the upper connector from rotating relative to the lower connector, the locking mechanism arranged to automatically retain a locked position when the lower connector is rotated to an original alignment.

A prosthetic adapter, comprising:

• a lower connector having a first receiving hole, a first portion located on a first side of the first receiving hole, a second portion located on a second side of the first receiving hole, and a guide hole, the first and second portions located on opposite sides of the first receiving hole in a transverse plane and arranged such that the guide hole extends completely within and is defined by a thickness of the lower connector from the first portion to the second portion;
• an upper connector rotatably coupled to the lower connector at the receiving hole;
• a locking mechanism, at the second portion of the lower connector, for preventing the upper connector from rotating relative to the lower connector, the locking mechanism arranged to automatically retain a locked position when the lower connector is rotated to an original alignment, the locking mechanism comprises at least a locking member;
• an activation member connected to and arranged for operating the locking member, the activation member positioned at the second portion of the lower connector and arranged to serve as a visual indicator whether the locking mechanism is locked;
• a release mechanism having an actuator coupled to and arranged for driving the activation member from a first position to a second position, wherein the activation member is configured to automatically return to the first position upon release of the release mechanism.