• Xin Gu, Biao Cheng, Jian Sun, and Kun Tao.
• Department of Orthopaedic, Shanghai Tenth People's Hospital, Tongji University, No, 301 Middle Yanchang Road, Zhabei District, Shanghai 20072, China. chengbiaobiaocheng@hotmail.com.
• J Orthop Surg Res. 2014 Jan 1;9:46.

BackgroundThe aim of this study is to investigate the anatomic changes in the shoulder joints responsible for omalgia after the clavicular hook plate fixation under arthroscope.MethodsArthroscopic examination was carried out for 12 omalgia patients who underwent clavicular hook plate fixation due to distal clavicle fractures. Functional outcome of shoulder was measured by the Japanese Orthopaedic Association (JOA) score before and after the withdrawal of the fixation plate.ResultsThe rotator cuff compression by the clavicular hook was arthroscopically observed in 11 of the 12 cases. The JOA scores of the shoulder were significantly improved at 1 month after the withdrawal of the fixation plate (pain, 28 ± 2.4 vs. 15 ± 5.2; function, 19.2 ± 1.0 vs. 11.7 ± 1.9; range of movements, 26.8 ± 2.6 vs. 14.8 ± 3.4) compared with before.ConclusionsThe impingement of the hook to the rotator cuff may be the main cause for the omalgia. The appropriate hook and plate that fit to the curve of the clavicle as well as the acromion are necessary to decrease the severity of omalgia.

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