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Clin Orthop Surg. 2011 Sep;3(3):184-190. English. Original Article.
Kim BS , Song HS .
Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.

BACKGROUND: This study compared the results of patients treated for ulnar impaction syndrome using an ulnar shortening osteotomy (USO) alone with those treated with combined arthroscopic debridement and USO. METHODS: The results of 27 wrists were reviewed retrospectively. They were divided into three groups: group A (USO alone, 10 cases), group B (combined arthroscopic debridement and USO, 9 cases), and group C (arthroscopic triangular fibrocartilage complex [TFCC] debridement alone, 8 cases). The wrist function was evaluated using the modified Mayo wrist score, disabilities of the arm, shoulder and hand (DASH) score and Chun and Palmer grading system. RESULTS: The modified Mayo wrist score in groups A, B, and C was 74.5 +/- 8.9, 73.9 +/- 11.6, and 61.3 +/- 10.2, respectively (p < 0.05). The DASH score in groups A, B, and C was 15.6 +/- 11.8, 19.3 +/- 11.9, and 33.2 +/- 8.5, respectively (p < 0.05). The average Chun and Palmer grading score in groups A and B was 85.7 +/- 8.9 and 84.7 +/- 6.7, respectively. The difference in the Mayo wrist score, DASH score and Chun and Palmer grading score between group A and B was not significant (p > 0.05). CONCLUSIONS: Both USO alone and combined arthroscopic TFCC debridement with USO improved the wrist function and reduced the level of pain in the patients treated for ulnar impaction syndrome. USO alone may be the preferred method of treatment in patients if the torn flap of TFCC is not unstable.

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