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Fibularis (Peroneus) Teritius Muscle – Attachments, Actions & Innervation

image descriptionFibularis (Peroneus) Teritius Muscle

image descriptionAttachments of Fibularis (Peroneus) Teritius Muscle: Origin & Insertion

Origin: (proximal attachments):

  1. Middle anterior surface of fibula.
  2. Often fused with distal portion of extensor digitorum longus.
  3. interosseous margin.

Insertion: (distal attachments):
Dorsal surface of base of 5th metatarsal.

Actions of Fibularis (Peroneus) Teritius Muscle on the foot:

a. image descriptionDorsiflexes foot at ankle.

b. image descriptionEverts foot at ankle.

Nerve to Muscle and its Spinal Segment:

Deep peroneal nerve (L4, L5, S1).

Overview:

Fibularis (Peroneus) Teritius Muscle - Test yourself
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