The palmaris longus (PL) muscle is not present in every person.
The palmaris longus muscle is a small, variable muscle located in the anterior forearm. It's most notable for its variation and frequent absence in humans. While considered a muscle, the absence of the palmaris longus does not affect grip strength or hand function.
Prevalence of Absence
- It is estimated that the palmaris longus is absent in approximately 15% of the global population.
Anatomical Significance
- The absence of the palmaris longus is considered a normal anatomical variation.
- The tendon of the palmaris longus is often used in reconstructive surgeries, making its presence or absence relevant in surgical planning.
In summary, the palmaris longus muscle demonstrates a significant degree of variation among individuals, with a notable percentage of the population lacking this muscle entirely. This absence does not typically lead to any functional impairment.
