Anatomic variation of the Palmaris longus muscle: A study using the Anatomage Table

Background: The palmaris longus muscle, located in the superficial anterior compartment of the forearm, plays a crucial role in wrist flexion.

Objective: This study aimed to investigate the anatomical variation (presence or absence) of the palmaris longus using the Anatomage Table 10.0, a cutting-edge virtual dissection tool.

Method: The research was conducted at the University of Global Health Equity's simulation laboratory in Rwanda from June 10 to June 15, 2024. Five cadavers (2 female, 3 male) with varying resolutions were used to examine the muscle's anatomy. Prior to data collection, instructors received training, and a pilot study ensured the reliability and validity of the research. Virtual dissection and labeling of the palmaris longus muscle and corresponding nerves were performed, while preserving key anatomical structures.

Result: The study revealed a bilateral absence of the palmaris longus muscle in one cadaver.

Conclusion: Our findings on palmaris longus muscle variability highlight the significance of anatomical variations in treatment outcomes and patient care, contributing to the growing understanding of their clinical implications. This variability is crucial for surgeons and clinicians to consider when performing forearm surgeries and diagnosing conditions like carpal tunnel syndrome.