Department of Anatomy, College of Medicine, The Catholic University of Korea, Banpo-Daero 222, Seocho-Gu, Seoul, 06591, Korea.
The Catholic Institute for Applied Anatomy, College of Medicine, The Catholic University of Korea, Banpo-Daero 222, Seocho-Gu, Seoul, 06591, Korea.
Anat Sci Int. 2021 Jun;96(3):481-484. doi: 10.1007/s12565-020-00593-5. Epub 2021 Jan 5.
Knowledge of the anatomic variations in the pectineus muscle is important for vascular surgeons to minimize complications following surgical approach to the distal part of the deep femoral artery. During routine dissection of the thigh, variations in the bilateral pectineus muscles were identified in an 82-year-old male cadaver. On both sides, the superficial and deep layers of the pectineus were divided at its distal part, forming a triangular-shaped hiatus between them and the femur shaft. Distally, the tendon of the superficial part intermingled with the tendon of the adductor longus. The tendon of the deep part was inserted into the pectineal line. On the right side, the deep femoral artery and its first perforating artery passed through the hiatus. On the left side, the deep femoral artery pierced the hiatus, and then, the first perforating artery was branched from the deep femoral artery. No reported case has described a pectineal hiatus. The variations observed in this study are an ontogenetic vestige of the two different origins of the pectineus. The insertion of the superficial layer into the adductor longus tendon suggests a close relationship between these muscles during prenatal development. Surgeons should be aware of the variation to minimize injury to the pectineus muscle while approaching the deep femoral artery.
熟悉收肌的解剖变异对于血管外科医生来说非常重要，这可以减少在对股深动脉远端进行手术入路时的并发症。在对一名 82 岁男性尸体的大腿进行常规解剖时，发现双侧收肌存在变异。在两侧，收肌的浅层和深层在其远端分开，在它们和股骨之间形成一个三角形的裂孔。在远端，浅层的肌腱与长收肌腱交织在一起。深层的肌腱插入耻骨线。在右侧，股深动脉及其第一穿动脉穿过裂孔。在左侧，股深动脉穿过裂孔，然后第一穿动脉从股深动脉分支。没有报道的病例描述过收肌裂孔。在这项研究中观察到的变异是收肌两个不同起源的个体发生遗迹。浅层插入到长收肌腱中表明这些肌肉在产前发育过程中关系密切。外科医生应该意识到这种变异，以尽量减少在接近股深动脉时对收肌的损伤。
