The Prevalence of Absence of the Palmaris Longus – A Study in a Chinese Population and a Review of the Literature

Introduction: In the recent years palmaris longus muscle tendon (PLMT) has become an extensively and intensively studied muscle all over the world. The main reason for this is the importance of PLMT which was recognized with development of plastic and reconstructive surgery. The possibilities of PLMT use has become bigger and bigger each day Objectives:The study aimed to evaluate the incidence of agenesis of palmaris longus muscle tendon among first year Filipino medical students at OLFU. Methods:This study was conducted at the Our Lady of Fatima University Medical Centre, Valenzuela City, Philippines. A semistructured proforma was used to record the relevant data for the study. The Thompson's test was used for assessing palmaris longus muscle tendon. After taking consent total of 503 first year Filipino medical students were involved.Results: Out of total 503 subjects, 170 (33.80%) were males and 333 (66.20%) were females. Percentage of frequency of agenesis of palmaris longus muscle tendon in both genders was 17.05%. There was no significant gender and laterality difference in the incidence of the agenesis of palmaris longus muscle tendon. That means there are equal chances of palmaris longus muscle tendon agenesis in both gender and the laterality. Conclusions:There was no significant gender and laterality difference in the incidence of the agenesis of PLMT. This means that there are equal chances of PLMT agenesis in both gender and the laterality.

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“…This means that it is important to become aware of the prevalence of PLMT agenesis in the population being treated 19,20,21 .…”

Section: Introductionmentioning

confidence: 99%

Study on Palmaris Longus Muscle Tendon Agenesis Among First Year Filipino Medical Students

Lamichhane

Sharma

Lamichhane

2017

J. Gandaki Med. Coll. Nepal

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“…Not only in terms of absence but also in variability of origin and insertion and morphology [1]. The PLM can be absent unilateral and bilateral in about 22.4% of human beings (Caucasians) with a range of 3.0%-63.9%, depending on the ethnic background of a population [2]. A great diversity is reported between different populations in the prevalence of absence of the PLM [3].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Palmaris Longus Muscle on Function in Sports: An Explorative Study in Elite Tennis Players and Recreational Athletes

Vercruyssen

Scafoglieri

Cattrysse

2016

JFMK

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Abstract:The Palmaris longus muscle can be absent unilateral or bilateral in about 22.4% of human beings. The aim of this study is to investigate whether the presence of the Palmaris longus muscle is associated with an advantage to handgrip in elite tennis players compared to recreational athletes. Sixty people participated in this study, thirty elite tennis players and thirty recreational athletes. The presence of the Palmaris longus muscle was first assessed using different tests. Grip strength and fatigue resistance were measured by an electronic hand dynamometer. Proprioception was registered by the Flock of Birds electromagnetic tracking system. Three tests were set up for measuring proprioception: joint position sense, kinesthesia, and joint motion sense. Several hand movements were conducted with the aim to correctly reposition the joint angle. Results demonstrate a higher presence of the Palmaris longus muscle in elite tennis players, but this was not significant. Maximal grip strength was correlated with gender and only on the dominant side; it was also correlated with age. Fatigue resistance showed only on the non-dominant side; a significant difference in elite and recreational athletes. In proprioception there was no correlation with elite and recreational athletes or the presence of the Palmaris longus muscle.

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“…12.5% (75 subjects) showed unilateral absence and 18.75% (112 subjects) showed bilateral absence. [13] Ceyhan and Mavi [14] Studies among the Asian population showed that the incidence is 3.4% in Japanese, [15] 4.6% in Chinese, [16] and 0.6% in the Korean [17] respectively. Within Africa, studies have equally been conducted.…”

Section: Discussionmentioning

confidence: 99%

Morphometric analysis of the palmaris longus muscle: a fetal study

Kocabıyık¹

2013

Anatomy

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Objectives: The palmaris longus muscle is absent in 10-15% of forearms. Its long, flat tendon broadens as it passes in front of flexor retinaculum, to which it is partly adherent. In the palm it splits to attach the longitudinally directed fibres of the palmar aponeurosis. This fetus study is made to evaluate morphometric and topographic differences of adult and fetal palmaris longus muscle. Methods:The present study is carried out on 24 human fetuses aged 17-40 weeks of gestation. All upper limbs were carefully dissected with the aid of a stereomicroscope at 1.6x magnification. Digital calliper was used for all the measurements. Results:The palmaris longus muscles were absent in both forearms in 7 fetuses and in a unilateral forearm in 5 fetuses. Reversed palmaris longus muscle was found in 2 forearms. Most fetuses had a typical palmaris longus muscle and tendon shape. The mean length and width of the tendons were 18.42±9.55 and 0.66±0.37 mm, respectively, in second trimester and, 25.9±13.90 and 1.71±0.95 mm in third trimester, respectively. The mean length and width of the muscular belly were 13.33±7.05 and 2.03±1.04 mm, respectively, in second trimester and, 30.42±16.81 and 3.77±2.07 mm in third trimester, respectively. Conclusion:The results of our study show to more pronounced loss of the muscle on the left side. This detailed fetal study in relationship to the palmaris longus muscle would be useful for educational anatomy dissections and surgical interventions for relevant clinical procedures.

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The Prevalence of Absence of the Palmaris Longus – A Study in a Chinese Population and a Review of the Literature

Cited by 86 publications

References 12 publications

Study on Palmaris Longus Muscle Tendon Agenesis Among First Year Filipino Medical Students

Study on Palmaris Longus Muscle Tendon Agenesis Among First Year Filipino Medical Students

The Impact of Palmaris Longus Muscle on Function in Sports: An Explorative Study in Elite Tennis Players and Recreational Athletes

Morphometric analysis of the palmaris longus muscle: a fetal study

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