Long-term radiographic outcomes and functional evaluation of ulnar shortening osteotomy in patients with ulnar impaction syndrome and reverse oblique sigmoid notch: a retrospective case series study

BMC Musculoskeletal Disorders

Steve K. Lee¹  Yi-Chao Huang²  Jung-Pan Wang²  Ming-Chau Chang²  Hui-Kuang Huang³  Cheng-Yu Yin⁴ 

[1] Department of Orthopedic Surgery, Hand and Upper Extremity Service, Hospital for Special Surgery, New York, NY, USA;Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan;Department of Orthopedics & Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan;Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan;Department of Orthopedics & Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan;Department of Orthopedic Surgery, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan;Chung Hwa University of Medical Technology, Tainan, Taiwan;Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan;Department of Orthopedics & Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan;Department of Orthopedic Surgery, National Yang-Ming University Hospital, Yilan, Taiwan;

关键词: Ulnar impaction;    Oblique;    Reverse;    Sigmoid notch;    Ulnar shortening;   

DOI  :  10.1186/s12891-021-04029-7

来源: Springer

【 摘 要 】

BackgroundUlnar shortening osteotomy (USO) is an effective treatment for ulnar impaction syndrome. However, there have been reports of osteoarthritis (OA) at the distal radioulnar joint (DRUJ) when USO was performed on patients with a reverse oblique sigmoid notch. This study aimed to evaluate the radiographic and functional outcomes following USO in patients with a reverse oblique sigmoid notch.MethodsWe retrospectively reviewed patients having a reverse oblique sigmoid notch who underwent USO for ulnar impaction syndrome between 2002 and 2013. We evaluated radiographic changes of the DRUJ and functional outcomes of patients.ResultsWe enrolled 22 patients (22 wrists) with an average age of 49.6 years and a mean follow-up of 93.2 (range, 36–179; standard deviation [SD], 38.2) months. We found that there were changes in the inclination angle of the sigmoid notch, from an average reverse oblique of 14.9o (range, 11o–23o; SD, 3.4o) preoperatively to a more parallel 5.1o (range, 0o–11o; SD, 3.2o) at the final follow-up. The functional results at the final follow-up were good, with a mean visual analogue scale for pain of 0.2 (range, 0–1; SD, 0.4) at rest and 1.3 (range, 0–3; SD, 0.9) during activity, QuickDASH of 15.1 (range, 2.3–34.1; SD, 8.8), and modified Mayo Wrist Score of 91.6 (range, 70–100; SD, 6.4). Seven wrists (31.8%) had changes compatible with OA, but the wrists did not exhibit a significantly worse function when compared to wrists without OA changes, except for supination motion and grip strength.ConclusionsFor patients with a reverse oblique sigmoid inclination following USO, we observed that the inclination angle had a tendency to become parallel and some patients developed OA at the DRUJ. However, long-term functional outcomes could still be good. The reverse oblique sigmoid inclination does not seem to be an absolute contraindication for USO.

【 授权许可】

CC BY