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Journal of Hand Surgery (British and European Volume)
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Silicone Rubber Distal Ulnar Replacement Arthroplasty

S. D. SAGERMAN
J. G. SEILER
L. L. FLEMING
E. LOCKERMAN

From the Emory University School of Medicine, Department of Orthopaedics, Atlanta, Georgia, USA

Correspondence: J. G. Seiler III, Emory University School of Medicine, Department of Orthopaedics, 69 Butler Street, SE, Atlanta, Georgia 30303, USA.

We retrospectively reviewed 42 patients who underwent resection of the distal ulna with implantation of a silicone rubber ulnar head prosthesis (45 wrists). Two prostheses were used: the original Swanson prosthesis, and a prosthesis of our own design. Follow-up X-rays showed migration or breakage of 63% of the prostheses. No statistically significant correlation existed between the quality of functional outcome and the integrity of the prostheses. There was no significant difference between pre-operative and post-operative range of motion for the entire group or between patients with broken or intact prostheses. Histological confirmation of silicone synovitis was documented in one patient who required implant removal. We suggest that destabilization and breakage of prostheses result from fatigue failure secondary to the torque generated at the distal radio-ulnar joint during repeated pronation and supination. Use of a silicone rubber ulnar head prosthesis following distal ulna resection is not recommended.

Journal of Hand Surgery (British and European Volume), Vol. 17, No. 6, 689-693 (1992)
DOI: 10.1016/0266-7681(92)90202-D
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