Department of Anatomy, Bahria University Medical and Dental College, Karachi, Pakistan.
Department of Anatomy, Bahria University Medical & Dental College, Karachi.
J Pak Med Assoc. 2023 Jan;73(1):74-77. doi: 10.47391/JPMA.6251.
To determine the frequency of agenesis of palmaris longus muscle and its association with gender and hand dominance.
The cross-sectional descriptive study was conducted at the Bahria University Medical and Dental College, Karachi, from March 2021 to November 2021, and comprised medical students of either gender from 1st, 2nd and 3rd year of studies. Clinical examination of palmaris longus was done by using the classic Schaeffer's test, and it was confirmed using the Thompson's test. The agenesis of palmaris longus muscle and its association with gender and hand dominance was also tested. Data was analysed using SPSS 23.
Of the 200 participants, 114(57%) were female and 86(43%) were male. The overall age range was 18-23 years. Of the total, 195(97.5%) subjects were right hand dominant and 5(2.5%) were left hand dominant. Agenesis was found in 67(33.5%) subjects with no significant difference in terms of gender or hand dominance (p>0.05). Statistically significant difference (p=0.01) was found related to bilateral agenesis.
Bilateral agenesis was found significantly more in females compared to the males, while palmaris longus agenesis and hand dominance had no significant association.
确定掌长肌缺如的频率及其与性别和手优势的关系。
这是一项 2021 年 3 月至 11 月在卡拉奇的 Bahria 大学医学和牙科学院进行的横断面描述性研究，纳入了来自第 1、2 和 3 年学习阶段的男女医学生。使用经典的 Schaeffer 试验对手掌长肌进行临床检查，并使用 Thompson 试验进行确认。还测试了掌长肌缺如及其与性别和手优势的关系。使用 SPSS 23 对数据进行分析。
200 名参与者中，114 名（57%）为女性，86 名（43%）为男性。总年龄范围为 18-23 岁。在总共 200 名参与者中，195 名（97.5%）为右利手，5 名（2.5%）为左利手。67 名（33.5%）受试者存在掌长肌缺如，但在性别或手优势方面无显著差异（p>0.05）。与双侧缺如相关的差异具有统计学意义（p=0.01）。
与男性相比，女性双侧掌长肌缺如的发生率显著更高，而掌长肌缺如与手优势之间无显著关联。
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