Internal Oblique Muscle
Fibularis (Peroneus) Teritius Muscle – Attachments, Actions & Innervation
Attachments of Fibularis (Peroneus) Teritius Muscle: Origin & Insertion
Origin: (proximal attachments):
- Middle anterior surface of fibula.
- Often fused with distal portion of extensor digitorum longus.
- interosseous margin.
Insertion: (distal attachments):
Dorsal surface of base of 5th metatarsal.
Actions of Fibularis (Peroneus) Teritius Muscle on the foot:
a. Dorsiflexes foot at ankle.
b. Everts foot at ankle.
Nerve to Muscle and its Spinal Segment:
Deep peroneal nerve (L4, L5, S1).