Related Experiment Video
Updated: Sep 13, 2025

Vascularized Composite Hand Allograft Procurement and Preparation for Distal and Proximal Forearm Allotransplantation: A Stepwise Approach
Published on: May 23, 2025
Bilateral presentation of a flexor digiti minimi longus: an aberrant fifth digit flexor
Dylan Loeffler1, Justin Robert Siebert2
1Department of Health and Rehabilitation Sciences, Physical Therapy Program, Slippery Rock University, Slippery Rock, PA, USA.
Abstract:
Anatomical variations in upper extremity musculature can affect motor function, contribute to neuropathies, or enhance functionality. This clinical case report describes a bilateral anomalous muscle in the forearm, a "flexor digiti minimi longus," originating in the anterior proximal forearm and extending via a distinct tendon to the distal phalanx of the fifth digit. Recognizing such variations is crucial for understanding digit function, guiding orthopedic surgery, and identifying potential neurovascular complications.
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 of the Leg that Move the Foot and Toes
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles....
Bones of the Upper Limb: Ulna
Spinal Nerves: Plexus I
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
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...
Bones of the Upper Limb: Radius
The radius has a nail-shaped head, and a...

