Hereditary and racial variation in the musculus palmaris longus

Thompson, J. W.; McBatts, J.; Danforth, C. H.

doi:10.1002/ajpa.1330040207

Cited by 80 publications

(86 citation statements)

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“…Thompson et al reported that men were more prone to have a bilateral and unilateral absence of the PLM, but this was not statistically significant [27]; other authors reported the incidence of agenesis to be higher in women [1,26,34].…”

Section: Discussionmentioning

confidence: 92%

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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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Section: Discussionmentioning

confidence: 92%

“…Thompson's test: fist is made, then flexed, finally the thumb is opposed and flexed over the fingers [27]. ‚ Mishra's test I: passive hyperextension of the metacarpophalangeal joints of all fingers, then the subject is asked to actively flex the wrist [28].…”

mentioning

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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“…In humans, the palmaris longus muscle of the forearm is commonly used as a source for tendon transplants. However, this muscle is absent, either unilaterally or bilaterally, in up to 15% of humans, depending strongly upon the ethnicity of the population being tested (Thompson et al, 1921;Thompson et al, 2001;Sebastin et al, 2005). This variability also has a strong heritable component (Thompson et al, 1921), and there is also significant variation in the size of this muscle (Sebastin et al, 2005).…”

Section: Research Articlementioning

confidence: 99%

Crossveinless and the TGFβ pathway regulate fiber number in theDrosophilaadult jump muscle

et al. 2009

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Skeletal muscles are readily characterized by their location within the body and by the number and composition of their constituent muscle fibers. Here, we characterize a mutation that causes a severe reduction in the number of fibers comprising the tergal depressor of the trochanter muscle (TDT, or jump muscle), which functions in the escape response of the Drosophila adult. The wildtype TDT comprises over 20 large muscle fibers and four small fibers. In crossveinless (cv) mutants, the number of large fibers is reduced by 50%, and the number of small fibers is also occasionally reduced. This reduction in fiber number arises from a reduction in the number of founder cells contributing to the TDT at the early pupal stage. Given the role of cv in TGFβ signaling, we determined whether this pathway directly impacts TDT development. Indeed, gain-and loss-of-function manipulations in the TGFβ pathway resulted in dramatic increases and decreases, respectively, in TDT fiber number. By identifying the origins of the TDT muscle, from founder cells specified in the mesothoracic leg imaginal disc, we also demonstrate that the TGFβ pathway directly impacts the specification of founder cells for the jump muscle. Our studies define a new role for the TGFβ pathway in the control of specific skeletal muscle characteristics.

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“…Unilateral agenesis was seen in 76 (15.2%) and bilateral [12]. The prevalence of absence of PL in the Chinese populace was 4.6% (bilateral 1.2% and unilateral 3.3%) [13].…”

Section: Resultsmentioning

confidence: 94%

Clinical Study of Absence of the Palmaris Longus and Its Correlation With Other Anatomical Anomalies

B¹,

N²

2017

IJAR

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Hereditary and racial variation in the musculus palmaris longus

Cited by 80 publications

References 0 publications

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

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

Crossveinless and the TGFβ pathway regulate fiber number in theDrosophilaadult jump muscle

Clinical Study of Absence of the Palmaris Longus and Its Correlation With Other Anatomical Anomalies

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