Rhizarthrose

Abstract

Rhizarthrosis is a frequent disease, mostly observed in postmenopausal the women. It is localized in the trapezometacarpal joint, which is an instable joint, reinforced by strong ligamnts, and submit to high level of biomechanical stress. A reason why this joint is frequently affected by a degenerative process. The clinical diagnosis is easy in front of a pan localized at the base of the thumb. X Rays confirm the involvement of the TPZ joint and the extension to adjacent joints. The evolution is marked by a deformation of the thumb in Z or H, evolving over many years and which may lead to some functional impairment. The treatment consists in a nocturnal splint, analgesics, NSAIDs and local intraarticular injections of corticosteroids or hyaluronic acid preparations. However, the level of proofs needs to be better validated. In case of non-response to medical therapy, surgical procedure should be contemplated and consists in trapezectiomy of local prostheses.