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Bilateral accessory flexor digitorium longus muscle in man
1Kahramanmaraş Sütçü Imam University, School of Medicine, Department of Anatomy, Turkey. yakupgumusalan@hotmail.com
Summary
A rare accessory muscle, the flexor digitorum longus accessorius, was found in both legs of a cadaver. This anatomical variation may impact diagnostic imaging and contribute to tarsal tunnel syndrome.
Area of Science:
- Anatomy
- Human Anatomy
- Musculoskeletal System
Background:
- Anatomical variations in the lower limb can influence biomechanics and clinical presentations.
- Understanding accessory muscles is crucial for accurate diagnosis and surgical planning.
Observation:
- A bilateral occurrence of the flexor digitorum longus accessorius muscle was identified in the deep posterior compartment of a 57-year-old male cadaver.
- This accessory muscle originated from the tibia, fibula, intermuscular septum, and deep fascia, converging near the tibial nerve.
Findings:
- The muscle formed a tendon that passed through the tarsal tunnel, inserting into the quadratus plantae tendon.
- Its anatomical course placed it in close proximity to the tibial nerve and associated neurovascular structures.
Implications:
- The presence of this accessory muscle may lead to misinterpretation during radiodiagnostic imaging.
- It is a potential causative factor for tarsal tunnel syndrome, necessitating clinical consideration.