Sakthivel Sulochana, Verma Suman
Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
Int J Appl Basic Med Res. 2017 Apr-Jun;7(2):143-145. doi: 10.4103/ijabmr.IJABMR_326_16.
We report a rare combination of variations in the upper limb of a human cadaver. Accessory flexor carpi ulnaris with absent palmaris longus was observed in the left forearm during routine dissection of a male cadaver. Variant vascular pattern was observed bilaterally. Brachial artery bifurcated at a higher level. Ulnar artery gave rise to persistent median artery (PMA) which pierced the median nerve and accompanied it deep into flexor retinaculum to terminate as two common palmar digital arteries. Superficial palmar arch was not formed as the PMA did not anastomose with either the radial or ulnar artery. Radial artery was small and deep palmar arch was mainly contributed by the deep branch of ulnar artery. Awareness of these coexistent variations in the forearm and hand is anatomically as well as clinically important in reconstructive hand surgeries.
我们报告了一具人类尸体上肢变异的罕见组合。在一名男性尸体的常规解剖过程中，左侧前臂观察到尺侧腕屈肌副肌且掌长肌缺如。双侧观察到变异的血管模式。肱动脉在较高水平分叉。尺动脉发出持续正中动脉（PMA），该动脉穿过正中神经并伴随其深入屈肌支持带，最终终止为两条掌指总动脉。由于PMA未与桡动脉或尺动脉吻合，故未形成掌浅弓。桡动脉细小，掌深弓主要由尺动脉的深支构成。了解前臂和手部这些共存的变异在重建手部手术中具有解剖学和临床意义。
