Arthroscopy alone or in association with open cystectomy: in treatment of lateral meniscal cysts.

We retrospectively the results in 27 knees (26 patients) with cysts of the lateral meniscus. All patients had a meniscal tear (20 horizontal, 7 transverse) and pain over the lateral joint line with a palpable mass. The pathology was in the middle or anterior one-third of the meniscus. Arthroscopic surgery was performed in 22 knees, consisting of partial excision of meniscal tear, leaving a peripheral rim, coupled with débridement of the cyst; open cystectomy was performed in the remaining 5 knees. Average follow-up was 58 months (range 9-110). All patients but two were satisfied with the results.