Related Experiment Video
Updated: Mar 31, 2026

Utility of Dissociated Intrinsic Hand Muscle Atrophy in the Diagnosis of Amyotrophic Lateral Sclerosis
Published on: March 4, 2014
Palmaris Longus Muscle's Prevalence in Different Nations and Interesting Anatomical Variations: Review of the
Dimitriou Ioannis1, Katsourakis Anastasios2, Natsis Konstantinos3
1Laboratory of Anatomy in the Department of Physical Education and Sports Medicine (Serres), Aristotele University of Thessaloniki, Thessaloniki, Greece.
Abstract:
The prevalence of the palmaris longus (PL) muscle varies more than any other muscle in the human body. Its absence across the world ranges between 1.5% and 63.9%. It presents with many different anomalies, discovered either clinically, intraoperatively or after anatomical examination of cadavers. This paper includes recent studies and reports about the presence and variations of the PL muscle, thereby illustrating the differences between ethnic groups, as well as emphasizing the different ways of finding it, during daily clinical and surgical practice.
More Related Videos
08:12Author Spotlight: Isolation of Long Muscle Fibers from Mouse Hindlimb Muscles for Studying Excitation-Contraction Coupling Across Fiber Types
Published on: December 1, 2023
04:06Author Spotlight: Enhancing Remote Rehabilitation with Virtual Reality and Electromyography
Published on: January 12, 2024
Related Concept Videos
Muscles of the Forearm that Move the Hand and Fingers
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi...
Muscles that Move the Forearm
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
Naming Skeletal Muscles
The key factors used in naming muscles include:
Bones of the Upper Limb: Radius
The radius has a nail-shaped head, and a...
Gross Anatomy of Skeletal Muscles
Bones of the Upper Limb: Ulna