Metacarpo-phalangeal thumb sprains based on experience with more than 1,000 cases.

The metacarpo-phalangeal thumb sprains are very frequent. They mostly occur during sports (50%), and the ulnar collateral ligament is the structure most frequently ruptured (86%). Surgical repair of all severe lesions and/or bony fragment avulsions has led to 90% of good, and excellent results, when the operation is followed by a proper physical therapy. Criteria for evaluation are considered and so is the management of the old or neglected sprains.