Prosthesis to replace a flexor tendon pulley

A prosthesis to replace a flexor tendon pulley of a human hand, the prosthesis comprising:

• a tendon holding member with a hollow cylindrical shape, the tendon holding member comprising polyurethane, polycaprolactone, or a combination thereof, an inner diameter of an inner surface of the tendon holding member being 8 mm, a length of the tendon holding member being 10 mm, a thickness of the tendon holding member being 200 μm, the tendon holding member configured to receive and hold a tendon of the human hand, the tendon of the human hand associated with the flexor tendon pulley of the human hand, the tendon holding member comprising:
• an outer layer on an outer surface of the tendon holding member, a thickness of the outer layer being 12 μm, the outer layer comprising hydroxyapatite, and
• an inner layer on an inner surface of the tendon holding member, a thickness of the inner layer being 12 μm, the inner layer comprising hyaluronic acid;
• a connecting plate with a rectangular shape attached to the tendon holding member, a length of the connecting plate being 15 mm, a width of the connecting plate being 9 mm, a thickness of the connecting plate being 1 mm, the length of the connecting plate corresponding to the length of the tendon holding member, the width of the connecting plate corresponding to the inner diameter of the inner surface of the tendon holding member, the connecting plate comprising titanium, the connecting plate configured to be attached to a phalange of the human hand, the phalange of the human hand associated with the tendon of the human hand, the connecting plate comprising a plurality of connecting holes, a connecting hole from the plurality of connecting holes configured to receive a connecting screw, the connecting screw configured to be screwed into the phalange of the human hand and, to thereby, secure the connecting plate to the phalange of the human hand, the plurality of connecting holes comprising:
• a first connecting hole at a first corner of the connecting plate;
• a second connecting hole at a second corner of the connecting plate;
• a third connecting hole at a third corner of the connecting plate;
• a fourth connecting hole at a fourth corner of the connecting plate;
• and
• a fifth connecting hole at a center of the connecting plate, and
• wherein the tendon holding member comprises an access hole on a top section of the tendon holding member, the access hole aligned with the fifth connecting hole, the access hole configured to provide access to the fifth connecting hole.