Mathew Asha Joselet, Sukumaran Tintu Thottiyil, Joseph Susan
Clinical Associate Professor, Department of Anatomy, Amrita School of Medicine, AIMS, Amrita Vishwa Vidyapeetham , Ponekara Kochi, Kerala, India .
Lecturer, Department of Anatomy, Amrita School of Medicine, AIMS, Amrita Vishwa Vidyapeetham , Ponekara Kochi, Kerala, India .
J Clin Diagn Res. 2015 Feb;9(2):AC01-3. doi: 10.7860/JCDR/2015/11212.5542. Epub 2015 Feb 1.
Palmaris longus (PL) is one of the most variable muscles in our body and is vestigial functionally. Its long tendon and its superficial location make it an ideal source for tendon harvesting. Variations such as absence, duplication and reversal have far reaching clinical impact. The aim of this study is to estimate the presence, variants and nerve supply of the PL.
Upper extremity of 24 cadavers was dissected and PL was examined. The results were compared to other studies on the PL and literature survey was carried out.
Thirty nine specimens showed normal morphology and four showed complete agenesis. Other morphological variations seen included - reversed, hybrid, fusiform, fleshy and bifurcated tendon of insertion.
Every surgeon must be aware of the variations of the versatile but temperamental PL. Prior knowledge of the layout of the muscle helps in planning intricate surgeries to which this tendon is put use to.
掌长肌（PL）是人体中变异最多的肌肉之一，其功能已退化。它的长肌腱及其浅表位置使其成为肌腱采集的理想来源。诸如缺如、重复和反转等变异具有深远的临床影响。本研究的目的是评估掌长肌的存在情况、变异及神经支配。
解剖了24具尸体的上肢并检查了掌长肌。将结果与其他关于掌长肌的研究进行比较，并开展了文献调查。
39个标本显示形态正常，4个显示完全缺如。观察到的其他形态变异包括——插入肌腱反转、混合型、梭形、肉质型和分叉型。
每位外科医生都必须了解多功能但多变的掌长肌的变异情况。对该肌肉布局的先验知识有助于规划使用该肌腱的复杂手术。
