Patent ID: 6736851
Filing Date: 2004-05-18
Classification: A61F

Abstract:
A shoulder prosthesis comprising:a humeral stem adapted to be implanted into a humerus and including an expansion receptor; a humeral head defining an articulation surface and a mounting cavity; and an expansion device cooperating with said mounting cavity and said expansion receptor to couple said humeral head to said humeral stem, said expansion device allowing angular positioning of said humeral head relative to said humeral stem and locking of a selected angular position of said humeral head relative to said humeral stem by expansion of said expansion device relative to said expansion receptor, wherein said expansion device comprises an expansion ring having a threaded bore and an expansion gap, and wherein said expansion receptor comprises a post having a threaded taper, said threaded taper receiving said expansion ring such that when said expansion ring is advanced onto said threaded taper, said expansion ring expands.