Leg Anatomy PDF

 Leg By: Prof. Dr. Nancy El Sekily Professor in Anatomy and Embryology department & French department Compartments of the leg  Compartments of the leg Anterior Dorsiflexion Anterior tibial BVs compartment Extensor muscles and...

 Leg By: Prof. Dr. Nancy El Sekily Professor in Anatomy and Embryology department & French department Compartments of the leg  Compartments of the leg Anterior Dorsiflexion Anterior tibial BVs compartment Extensor muscles and anterior tibial N Lateral Superficial peroneal compartment Plantar flexion (musculocutaneous) Eversion of foot Posterior Plantar flexion Posterior tibial BVs compartment Flexor muscles and posterior tibial N  Anterior compartment of leg "Tom Has Very Nice Dogs and Pigs" Contents: 1. Tibialis anterior m. 2. Extensor hallucis longus. 3. Anterior tibial BVs 4. Anterior tibial N 5. Extensor digitorum longus. 6. Peroneus tertius.  Origin of muscles of anterior compartment Tibialis lateral surface anterior of tibia Ext Anterior Hallucis surface of longus. fibula Ext digit Anterior longus. surface of fibula Peroneus Anterior tertius surface of fibula Insertion of tibialis anterior Medial cuneiform bone Base of 1st metatarsal bone Insertion of extensor hallucis longus--------- base of the terminal phalanx of big toe. Insertion of peroneus tertius-------base of 5th metatarsal bone.  insertion of Extensor digitorum longus Dorsal expansions of Lateral 4 toes (Middle and terminal phalanges)  Nerve supply of anterior compartment Anterior tibial nerve (deep peroneal nerve)  Action of muscles of anterior compartment Dorsiflexion of the foot. + tibialis ant →inversion + peroneus tertius→ever sion of foot.  Action of muscles of anterior compartment Dorsiflexion of the foot. + tibialis ant →inversion + peroneus tertius→ever sion of foot.  Eversion Inversion movement which movement which directs directs the sole of foot outwards. the sole of foot inwards.  Deep peroneal nerve (anterior tibial nerve) Branch of common peroneal. At lateral side of neck of fibula within peroneus longus.  Deep peroneal nerve (anterior tibial nerve) Terminate at the dorsum of foot deep to inf ext retinaculum--- med and lat terminal branches.  Deep peroneal nerve (anterior tibial nerve) Branches: 1- Muscular. 2- Cutaneous 3- Articular.  Lateral Compartment of the leg Located - lateral to Fibula. - Contains 2 muscles: 1. Peroneus longus. 2. Peroneus brevis.  Origin of muscles of lateral compartment 1. Peroneus longus: Upper 2/3 of lateral surface of fibula. 2. Peroneus brevis: lower 2/3 of lateral surface of fibula.  Insertion of muscles of lateral compartment Peroneus LONGUS: inserted into the medial cuneiform and the base of the 1st metatarsal bone. Peroneus BREVIS: inserted into the base of the 5th metatarsal bone.  Nerve supply of lateral compartment Superficiel peroneal nerve (musculocutaneous)  Action of muscles of lateral compartment 1. Plantar flexion of ankle joint. 2. Eversion  Superficial peroneal nerve. (Musculocutaneous nerve) Beginning : the common peroneal nerve near the lat side of neck of the fibula Inside the peroneus longus  Superficial peroneal nerve. (Musculocutaneous nerve) End:pierces deep fascia --- cutaneous at the lower part of leg. Divides into med and lat terminal branches.  Superficial peroneal nerve. (Musculocutaneous nerve) Branches: 1- Muscular. 2- Cutaneous Thank you