Surface replacement trapeziometacarpal joint arthroplasty – early results

Abstract

This study reviews the results of Surface Replacement Trapeziometacarpal (SR TMC, Avanta, San Diego, CA) total joint arthroplasty. Fifty patients (62 joints) were included in the study. Forty-three patients (54 joints) were seen at final follow up. Seven patients (eight joints) were interviewed over the phone. Seven patients were revised to trapeziectomy and ligament reconstruction with tendon interposition, five for aseptic loosening and two for dislocation. At final follow up, the mean Quick DASH score was 30.4 and the Sollerman Score was 77.3. Radiological review of the surviving 55 joints showed subsidence of four trapezial components in asymptomatic patients. Cumulative survival rate was 91% at 3 years. Eighty-five percent of the patients were satisfied with the outcome of their treatment.

Fixation of trapezial implants in a trapeziometacarpal total joint prosthesis tested in a model of porcine bone

“…The results after resurfacing of the TM joint varies [5,10], and the ball-and-socket design seems to be the most popular for total joint prosthesis rather than resurfacing. The kinetics of both the ball-and-socket Central bone design and the resurfacing design for a total joint prosthesis of the TMC have been studied using a model of a cadaver hand [11,12], but both studies focused on joint kinetics and not on the strength of fixation of the implant.…”

Results of 115 Rubis II reverse thumb carpometacarpal joint prostheses with a mean follow-up of 10 years

“…The pre-operative radiographs were graded using the Dell classification (Dell et al, 1978) (Table 1). Post-operative radiographs were examined for the presence of radiolucent lines, loosening (Pendse et al, 2009) and periprosthetic ossification.…”

Feasibility of model-based Roentgen Stereophotogrammetric Analysis to evaluate early migration of the trapeziometacarpal joint prosthesis

“…This prosthesis might perform better in terms of survival, which is highly dependent on implant stability [ 8 ]. Clinical reports of the SR™ TMC prosthesis however show loosening rates from zero to 55 % [ 5 , 9 , 10 ].…”