Banjo A O
Afr J Med Med Sci. 1996 Mar;25(1):69-73.
The aberrant popliteus muscle is an anomalous muscle in the popliteal fossa. It originates from the femur in the superior triangular surface of the popliteal fossa above the origin of the gastrocnemius muscle and it is inserted into the musculo- tendinous part on the medial side of the lateral head of the gastrocnemius muscle. The muscle lies immediately deep to the popliteal vein and during contraction is likely to compress the popliteal vein and reduce venous return from legs; it could also compress the lateral branches of the popliteal artery to the knee joint and the lateral head of the gastrocnemius muscle. It may present as a tumour of the popliteal fossa in radiographic examinations such as computed tomography (CT) and magnetic resonance imaging (MRI). If it undergoes hypertrophy as it may do in athletes and body builders, it may limit flexion of the knee joint, cause pain due to compression of surrounding structures and inhibit performance.
异常腘肌是腘窝内的一块异常肌肉。它起自腘窝上方腓肠肌起点上方的股骨腘面的上三角区，止于腓肠肌外侧头内侧的肌腱部。该肌肉紧邻腘静脉深面，收缩时可能压迫腘静脉并减少腿部的静脉回流；还可能压迫腘动脉至膝关节的外侧分支以及腓肠肌外侧头。在计算机断层扫描（CT）和磁共振成像（MRI）等影像学检查中，它可能表现为腘窝肿瘤。如果它像运动员和健美运动员那样发生肥大，可能会限制膝关节的屈曲，因周围结构受压而引起疼痛并影响运动表现。
