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Journal of Hand Surgery (British and European Volume)
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Articles

Avanta Versus Swanson Silicone Implants in the MCP Joint—A Prospective, Randomized Comparison of 30 Patients Followed for 2 Years

K. MÖLLER
C. SOLLERMAN
M. GEIJER
P. KOPYLOV
M. TÄGIL

From the Department of Hand Surgery, Sahlgrenska University Hospital/Sahlgrenska, Göteborg, Sweden, the Department of Hand Surgery, Lund University Hospital, Lund, Sweden, the Department of Orthopaedic Surgery, Capio Lundby Hospital, Göteborg, Sweden, and the Department of Radiology, Sahlgrenska University Hospital, Göteborg, Sweden

Correspondence: Dr. Karin Möller, MD, Department of Orthopaedic Surgery, Capio Lundby Hospital, Wieselgrensplatsen 2A, S-417 17 Göteborg, Sweden. Tel.: +46 31 657000; fax: +46 31 657201; E-mail: karin.moller{at}lundbysjukhus.se

The results of Swanson and Avanta metacarpophalangeal joint arthroplasties in rheumatoid patients were compared in a prospective, randomized study of 30 patients (120 implants). At 2-year follow-up, grip strength was measured, hand function was assessed with the Sollerman test and the subjective outcome was determined with visual analogue scores. With both implants ulnar deviation and flexion deformities decreased, and there was no difference between the groups. The increase in range of motion was 7° greater with Avanta implants than with Swanson implants. Grip strength and hand function were unaltered but the visual analogue scales showed decreased pain levels and subjective improvements in hand function, grip strength and cosmesis. Twenty-four of 30 patients were satisfied. Fracture of the silicone spacer occurred with 12 Avanta (20%) and eight Swanson implants (13%), with a higher fracture frequency in men.

Key Words: metacarpophalangeal joint • arthroplasty • hand surgery

Journal of Hand Surgery (British and European Volume), Vol. 30, No. 1, 8-13 (2005)
DOI: 10.1016/J.JHSB.2004.09.011
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 J Hand Surg Eur VolHome page
T. J. JOYCE
Analysis of the Mechanism of Fracture of Silicone Metacarpophalangeal Prostheses
J Hand Surg Eur Vol., February 1, 2009; 34(1): 18 - 24.
[Abstract] [Full Text] [PDF]