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LONG-TERM RESULTS OF ARTHROSCOPIC SYNOVECTOMY FOR SEROPOSITIVE RHEUMATOID ARTHRITIS

The Willows, 72A Park Rd, Kingston upon Thames, Surrey KT2 5JZ

To determine the long term outcome and complications associated with arthroscopic synovectomy in 22 knees with rheumatoid arthritis.

A consecutive series of 22 knees in 18 patients with seropositive RA underwent arthroscopic synovectomy for painful and swollen knees unresponsive to medical treatment. All operations were performed by the senior author. The mean age at operation was 44 years (22–64). All pre-operative Xrays showed Larsen grade 2 or less and no knees demonstrated marked joint laxity. Knee Society scores were recorded pre-operatively and at review, with a mean follow-up of 8 years(6–16).

Two out of 22 knees (9%) have undergone TKR at 1 and 2 years post synovectomy. Two patients underwent further synovectomy for persistent symptoms but have since remained well. No per-operative complications were recorded but one large haemarthrosis and one stiff knee requiring manipulation were seen. The mean clinical and function scores increased by 22 and 15 points respectively at follow-up. The mean length of stay was 3 days and radiographs of the 20 knees not undergoing prosthetic replacement have all shown a small progression of degenerative radiological change.

This long-term study shows that arthroscopic synovectomy in appropriately selected patients with RA is a safe and reliable procedure with a low complication rate. The surgery is technically demanding but involves a shorter in-patient stay than with open synovectomy. The development of radiological degenerative changes were seen with all patients at review.

The abstracts were prepared by Mr Simon Donell. Correspondence should be addressed to him at the Department of Orthopaedics, Norfolk & Norwich Hospital, Level 4, Centre Block, Colney Lane, Norwich NR4 7UY, United Kingdom