RESULTS OF REOPERATION AFTER FAILED MODIFIED CONDYLOTOMY

Purpose: This retrospective study reports the reoperation rate for fai lure after modified condylotomy. Materials and Methods: A consecutive series from each of two surgeons constituted the study group of 361 jo ints in 235 patients. Reoperation rates were calculated for all joints and by type of disc displacement. Results: A second operation occurre d in 4.2% of all joints. However, the cumulative rate of reoperation w as 4.4%, because one of the joints required a third operation. Althoug h the rate of reoperation varied (0% to 6.5%) according to the type of disc displacement, the differences were not statistically significant . All joints requiring reoperation had a displaced disc, and move than half had lost nearly all the joint space gained by the primary operat ion. Conclusion: The rate of reoperation for modified condylotomy is l ow. Risk factors for reoperation appear to be recurrent or residual di sc displacement and loss of joint space after the first operation. Bil ateral operation was not a risk factor.