Methods and apparatuses for digit joint arthroplasty. The present
invention preferably allows for the treatment of disorders of digit
joints generally and interphalageal joints more specifically. The present
invention provides implants for the replacement of digit joint cartilage.
The implants of the present invention preferably include a head and a
shaft. The head may be shaped similarly to the cartilage that is being
replaced. The shaft is adapted so as to be able to be fit into, for
example, the phalanx. In certain preferred embodiments, the shaft is
threaded so that it may gain purchase to the phalangeal cortex. The
articulating portion of the implant preferably mimics the articular
surface of the native phalanx and thereby places minimal motion
restriction on the patient. The implants and methods of the present
invention have particular utility with the DIP joint of the hand.