Name
Pronunciation
(tib-e-A-lus an-TEER-i-or)
Origin/Proximal Attachment
Lateral tibial condyle
Proximal 2/3 of anterolateral surface of tibia
Adjoining anterior surface of interosseous membrane
Anterior intermuscular septum
Deep surface of crural fascia
Insertion/Distal Attachment
Medial & plantar surface of base of 1st metatarsal
Medial & plantar surface of medial cuneiform
Action/Relevance
Powerfully dorsiflexes ankle (tibiotalar joint)
Inverts & adducts foot
Innervation
Deep peroneal nerve (L4,5,S1)
Notes
Superficial muscle
Palpable lateral to tibia
Descends vertically to end in a tendon on its anterior surface in lower 1/3 of the leg
Passes through medial compartments of the superior & inferior retinacula, inclines medially
Overlaps anterior tibial vessels & deep peroneal nerve in upper part of lower leg