Casanova-Martínez Daniel, Valdivia-Gandur Ivan, Golanó Pau
Biomedical Department (Human Anatomy Unit), University of Antofagasta, Av. Angamos 601, 1240000, Antofagasta, Chile,
Anat Sci Int. 2014 Sep;89(4):250-4. doi: 10.1007/s12565-013-0223-9. Epub 2013 Dec 14.
The presence and disposition of supernumerary tendons in the fourth extensor compartment of the wrist have been described by several authors. The aim of this communication was to describe a finding in a study of an anatomical dissection of an adult cadaver that presents a rare disposition of extensor tendons in the fourth extensor compartment of both wrists. In the right wrist, we found an extensor pollicis et indicis communis with three slips: two toward the index finger and one toward the thumb. We found no similar reports in a review of the literature. Additionally, we found an extensor indicis radialis in the left wrist. In both hands, the course of accessory slips was modified by fiber derived from intertendinous fascia. Although this represents a small percentage of the distribution of tendons of the dorsal hand, knowledge of these anatomical variations and their relationships to intertendinous fascia is critical for clinical decisions because this area is used frequently in treatments related to tendon graft, transfer, and transplantation.
多位作者已描述了腕部第四伸肌间隙中额外肌腱的存在及分布情况。本报告的目的是描述在一项对成年尸体进行解剖研究时发现的一种情况，即双腕部第四伸肌间隙中伸肌腱呈现罕见的分布。在右腕部，我们发现一条拇示指共伸肌有三条肌腱束：两条朝向示指，一条朝向拇指。在文献回顾中我们未发现类似报告。此外，在左腕部我们发现了一条桡侧示指伸肌。在双手，副肌腱束的走行被来自腱间筋膜的纤维改变。尽管这在手背肌腱分布中占比很小，但了解这些解剖变异及其与腱间筋膜的关系对于临床决策至关重要，因为该区域在与肌腱移植、移位和移植相关的治疗中经常被用到。
