Low Zhi Xuan, McGrouther Duncan Angus
Department of Hand and Reconstructive Microsurgery, Singapore General Hospital, Academia, 20 College Road, Singapore, 169856, Singapore.
Surg Radiol Anat. 2023 Jul;45(7):901-909. doi: 10.1007/s00276-023-03149-0. Epub 2023 May 12.
The first dorsal interosseous (FDI) muscle, when impaired due to traumatic injuries or degenerative conditions, can be reanimated in various ways to restore pinch grip. These reconstructive techniques are planned based on a precise anatomical understanding of the FDI muscle. However, a review of the existing literature has brought to light controversy regarding its insertions. A systematic review of these descriptions is presented to appreciate these variations.
An electronic database search without exclusion by publication year and language was performed according to the Checklist for Anatomical Reviews and Meta-Analyses (CARMA) guidelines, using the PubMed, Scopus, Web of Science and Embase databases. An assessment of the methodological quality was performed.
Thirteen studies were included in this article. There is general agreement that the FDI muscle contains two bellies and a bony insertion into the index finger proximal phalanx base. However, due to wide anatomic variation, differences were reported on whether there is a soft tissue insertion. When this was found, the included studies differed on how commonly this occurs (between 1.4% and 78%), where it inserts. Other sites of distal insertions reported include the metacarpophalangeal capsule, the interosseous hood and an assemblage nucleus on the volar plate.
Our systematic review, focusing on the insertion of the FDI muscle, summarizes the existing knowledge on its anatomy and variations, thereby facilitating better understanding of its function and surgical planning for reconstruction.
第一背侧骨间肌（FDI）因创伤性损伤或退行性病变而受损时，可通过多种方式进行功能重建以恢复捏握功能。这些重建技术是基于对FDI肌肉精确的解剖学理解而制定的。然而，对现有文献的回顾揭示了关于其止点的争议。本文对这些描述进行系统综述，以了解这些变异情况。
根据解剖学综述和荟萃分析清单（CARMA）指南，在不排除出版年份和语言的情况下，使用PubMed、Scopus、科学网和Embase数据库进行电子数据库检索。对方法学质量进行了评估。
本文纳入了13项研究。普遍认为FDI肌肉有两个肌腹，并在示指近节指骨基部有一个骨性止点。然而，由于广泛的解剖变异，关于是否存在软组织止点存在不同报道。当发现有软组织止点时，纳入研究在其出现的频率（1.4%至78%之间）以及止点位置上存在差异。报道的其他远侧止点部位包括掌指关节囊、骨间肌筋膜和掌侧板上的集合核。
我们聚焦于FDI肌肉止点情况的系统综述，总结了其解剖结构和变异的现有知识，从而有助于更好地理解其功能以及重建手术规划。
