Kim Jihyeung, Cho Jaewoo, Lee Yo-Han, Oh Sohee, Gong Hyun Sik, Baek Goo Hyun
Department of Orthopaedic Surgery, Seoul National University, College of Medicine Jongno-gu, Seoul, Republic of Korea.
J Hand Surg Eur Vol. 2019 Jun;44(5):488-495. doi: 10.1177/1753193419828330. Epub 2019 Feb 24.
We retrospectively reviewed 26 patients diagnosed with idiopathic ulnar impaction syndrome and measured the slopes of the sigmoid notch and ulnar head at their centre using their preoperative three-dimensional computed tomography. We found that the slope of the sigmoid notch and that of the ulnar head were not parallel to each other. There was a significant linear relation between the slope of the ulnar head and the changes in the closest joint space of the distal radioulnar joint at the centre of the sigmoid notch after ulnar shortening. We conclude that the slope of the ulnar head is more strongly correlated with changes in the closest joint space in the distal radioulnar joint than that of the sigmoid notch. Our findings suggest that slope of the ulnar head might be as important a predisposing factor as that of the sigmoid notch for the progression of distal radioulnar joint arthritis after ulnar-shortening osteotomy. We should consider the slopes of both the sigmoid notch and ulnar head before the osteotomy. Level of evidence: IV.
我们回顾性分析了26例诊断为特发性尺骨撞击综合征的患者，并利用其术前三维计算机断层扫描测量了乙状切迹和尺骨头中心处的斜率。我们发现乙状切迹的斜率与尺骨头的斜率并不相互平行。尺骨头斜率与尺骨短缩术后乙状切迹中心处远侧尺桡关节最近关节间隙的变化之间存在显著的线性关系。我们得出结论，与乙状切迹的斜率相比，尺骨头的斜率与远侧尺桡关节最近关节间隙的变化相关性更强。我们的研究结果表明，对于尺骨短缩截骨术后远侧尺桡关节关节炎的进展，尺骨头的斜率可能与乙状切迹的斜率一样是重要的易感因素。在截骨术前，我们应同时考虑乙状切迹和尺骨头的斜率。证据级别：IV级。
