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Trapeziometacarpal osteoarthritis (TMC OA) is, also known as osteoarthritis at the base of the thumb, thumb carpometacarpal osteoarthritis, basilar (or basal) joint arthritis, or as rhizarthrosis. [ 3 ] [ 1 ] [ 2 ] This joint is formed by the trapezium bone of the wrist and the metacarpal bone of the thumb.
The carpometacarpal (CMC) joints are five joints in the wrist that articulate the distal row of carpal bones and the proximal bases of the five metacarpal bones.. The CMC joint of the thumb or the first CMC joint, also known as the trapeziometacarpal (TMC) joint, differs significantly from the other four CMC joints and is therefore described separately.
The recurrence rate after primary carpal tunnel release is approximately 2%. The success rate of surgery to relieve symptoms depends on the definition of “success” and the metrics applied. For example, with respect to alleviation of symptoms, up to 90% success is reported. Yet with respect to patient satisfaction, approximately 50% is reported.
Sharp, guillotine-type injuries with relatively uninjured surrounding tissue have the best post-replantation prognosis, with a success rate of 77%. [ 3 ] Severe crush injuries , multi-level injuries, and avulsion injuries often mangle soft tissue to the point of precluding rejoining of essential blood vessels, making replantation impossible.
The first short-term success in human hand transplant surgery occurred with Clint Hallam, [4] from New Zealand. Hallam lost his hand in an accident while in prison. [5] [6] [7] The operation was performed on September 23, 1998, [8] in Lyon, France, by a team assembled from different countries around the world led by French Professor Jean-Michel Dubernard, including Professor Nadey Hakim, from ...
The Kapandji score is a tool useful for assessing the opposition of the thumb, based on where on their hand the patient is able to touch with the tip of their thumb. [ 1 ] Scoring
The trapezium is distinguished by a deep groove on its anterior surface. It is situated at the radial side of the carpus, between the scaphoid and the first metacarpal bone (the metacarpal bone of the thumb). It is homologous with the first distal carpal of reptiles and amphibians.
The CMC joint of the thumb allows a wide range of motion while maintaining stability for grasp and pinch. [ citation needed ] With this in mind, failure to properly recognize and treat the Bennett fracture will not only result in an unstable, painful, arthritic CMC joint with diminished range of motion: it will also result in a hand with ...