Bilateral extensor indicis brevis: a rare muscular variant.

Area of Science:

• Anatomy
• Surgical Anatomy
• Human Variation

Background:

• Anatomical variations of forearm and hand muscles and tendons are common in humans.
• These anomalies are frequently identified during cadaveric dissections and surgical interventions.
• Awareness of these variations is essential for surgical safety.

Observation:

• A rare muscular variant, the extensor indicis brevis, was identified.
• This variant muscle originated from the ligaments of the proximal row of dorsal carpal bones.

Findings:

• The extensor indicis brevis demonstrated an unusual origin from the dorsal carpal ligaments.
• This specific anatomical variation has not been widely documented.

Implications:

• Accurate anatomical knowledge aids surgeons in avoiding inadvertent injury to surrounding neurovascular structures.
• Reporting rare variants like this contributes to a comprehensive understanding of human musculoskeletal diversity.
• Enhanced anatomical knowledge improves surgical planning and patient safety in hand and wrist procedures.