Sisli Etfal Training and Research Hospital, Plastic and Reconstructive Surgery Department, Sisli Etfal Egitim ve Arastirma Hastanesi, Plastik, Rekonstruktif ve Estetik Cerrahi Klinigi, 6. kat, 34360 Sisli-Istanbul, Turkey.
J Plast Reconstr Aesthet Surg. 2013 Jan;66(1):137-9. doi: 10.1016/j.bjps.2012.04.044. Epub 2012 May 30.
Anomalies of muscles of the upper extremity are frequently encountered and anatomic variations of the flexor digitorum superficialis (FDS) muscle-tendon unit are frequently reported by anatomists and clinicians. FDS anomalies can be in forms of tendon interconnections, substitution, absence or muscle belly variations and most of the times the anomalies of FDS produce few clinical symptoms. We report a rare and unusual case of FDS anomaly with a unique and large muscle belly. The deformity is type V according to the classification of Elliot et al. in which the muscle belly extends to four digits (the index, middle, ring and little finger) in the right hand of patient and there is absence of the palmaris longus tendon. The hand surgeon should be able to realise all variations of the FDS tendon and should be prepared for unexpected findings during surgery.
上肢肌肉异常经常被遇到，解剖学家和临床医生经常报告屈指浅肌（FDS）肌腱-肌腹单元的解剖变异。FDS 异常可能表现为肌腱相互连接、替代、缺失或肌腹变化，而且大多数情况下，FDS 的异常很少产生临床症状。我们报告了一例罕见的 FDS 异常，具有独特且大的肌腹。根据 Elliot 等人的分类，该畸形为 V 型，患者右手的肌腹延伸至四个手指（食指、中指、环指和小指），并且没有掌长肌腱。手外科医生应该能够认识到 FDS 肌腱的所有变异，并为手术中的意外发现做好准备。
