Albay S, Kastamoni Yadigar, Sakalli Büşra, Tunali S
Department of Anatomy, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey.
Rom J Morphol Embryol. 2013;54(1):85-9.
The aim of this study was to assess the absence of the palmaris longus, the proportion of the lengths of tendon and muscle belly, the development of the tendon and the belly during the fetal period, look for any difference between sides and gender. Fifty-eight spontaneously aborted human fetuses (26 female, 32 male, 116 upper extremities) were studied. The presence or absence of the palmaris longus was determined. The lengths of the belly and tendon were measured, and belly/tendon length ratio was calculated. Correlation with gestational age, body side and gender were studied. The muscle was absent in 44 forearms (37.93%; 20 right side, 34.48%; 24 left side, 41.38%); being bilateral in 19 of 58 fetuses (32.76%) and unilateral in six (10.34%). The unilateral absence rate was higher on the left side with a statistically significant difference. The absence of palmaris longus was more common in females, and the difference was statistically significant. The belly/tendon length ratio was 1.04 ± 0.35 on the right side and 1.09 ± 0.3 on the left. It did not show any difference according the fetal age. A sound knowledge on the anatomy and variations of palmaris longus is of great importance during surgical interventions; because it is the first choice for tendon grafts, by the virtue of its structure and function. Thus, this study is of academic interest for anatomists and hand surgeons alike.
本研究的目的是评估掌长肌的缺失情况、肌腱和肌腹长度的比例、胎儿期肌腱和肌腹的发育情况，并寻找两侧及性别之间的差异。对58例自然流产的人类胎儿（26例女性，32例男性，116条上肢）进行了研究。确定掌长肌的有无，测量肌腹和肌腱的长度，并计算肌腹/肌腱长度比。研究其与胎龄、身体侧别和性别的相关性。44条前臂（37.93%）无该肌肉；58例胎儿中有19例（32.76%）双侧缺失，6例（10.34%）单侧缺失。左侧单侧缺失率更高，差异有统计学意义。掌长肌缺失在女性中更常见，差异有统计学意义。右侧肌腹/肌腱长度比为1.04±0.35，左侧为1.09±0.3。根据胎龄未显示出任何差异。了解掌长肌的解剖结构和变异情况在外科手术中非常重要；因为凭借其结构和功能，它是肌腱移植的首选。因此，本研究对解剖学家和手外科医生都具有学术意义。
