Anomalous Extensor Digiti Minimi with Multiple Slips and Bulbous Appearance

Area of Science:

• Anatomy
• Orthopedics
• Musculoskeletal System

Background:

• Variations in extensor tendons of the hand are common but can cause wrist pain.
• Anomalies of extensor indicis proprius, extensor digitorum brevis manus, and extensor medii proprius are documented.
• A bulbous, multi-slip extensor digiti minimi anomaly is rarely described in orthopedic literature.

Observation:

• A 30-year-old woman presented with recurrent snapping, pain, and an audible click in her right fifth digit.
• The patient had no history of hand trauma.

Findings:

• The study describes a rare anatomical variation: a bulbous, multi-slip extensor digiti minimi.
• This anomaly led to symptomatic inflammation of the extensor retinaculum.

Implications:

• Provides a detailed anatomical description of a rare extensor digiti minimi anomaly.
• Offers a successful treatment strategy for inflamed, symptomatic extensor retinaculum.
• Contributes to understanding the causes of dorsal wrist pain and digital movement impairment.