[Trapezometacarpal osteoarthritis: review of 27 cases treated by using silicone implant arthroplasty].

The results of 27 silicone implant arthroplasties using in the treatment of trapezo-metacarpal osteoarthritis are analysed with 3 years follow-up : 56 % of the patients are satisfied with the operation ; 46 % are disappointed or displeased. Bad results are in relation to synovitis (4 cases), dislocation of the implant (2 cases), algodystrophy (4 cases). In total, in 4 cases, a excision of the implant was necessary. In the group "good results", improvement concern the pain ; thumb motion is not increase in all cases ; post-operative strenght is similar to pre-operative strenght.