Muscles of the planter surface of the foot by sohail ayub pptx

Muscles of the planter surface of the foot by sohail ayub pptx

1. Muscles of the planter surface of the foot ( sole ) FUNCTION: They act collectively to stabilize the arches of the foot and individually to control movement of the digits. INNERVATION: They are innervated by the medial or lateral plantar nerves (Branches of   Tibial Nerve ) There are ten  intrinsic muscles  located in the plantar aspect (sole) of the foot

2. The muscles of the plantar aspect are arranged in four layers (superficial to deep): ABDUCTOR HALLUCIS: Actions : Abduction and flexion of the great toe. Innervation : Medial plantar nerve. FLEXOR DIGITORUM BREVIS: Actions : Flexion of the lateral four toes at the proximal interphalangeal joints . Innervation : Medial plantar nerve. First layer contain three muscles ABDUCTOR DIGITI MINIMI: Actions : Abduction and flexion of the little toe . Innervation : Lateral plantar nerve.

3. SECOND LAYER: It contains two muscles. QUADRATUS PLANTAE: ACTIONS : Assists the flexor digitorum longus in flexion of the lateral four toes. INNERVATION : Lateral plantar nerve. LUMBRICALS : ACTIONS : Flexion at the metatarsophalangeal joints and extension at the interphalangeal joints INNERVATION : Medial lumbrical – medial plantar nerve. Lateral three lumbricals – lateral plantar nerve

4. Third Layer: It also contain three muscles Flexor Hallucis Brevis: Actions : Flexion of the great toe at the metatarsophalangeal joint. Innervation : Medial plantar nerve. Adductor Hallucis : Actions : Adduction of the great toe. Supports the transverse arch of the foot. Innervation : Deep branch of lateral plantar nerve. Flexor Digiti Minimi Brevis : Actions : Flexion of the little toe at the metatarsophalangeal joint. Innervation : Superficial branch of lateral plantar nerve.

5. FOURTH LAYER IT CONTAINS TWO MUCLES : PLANTAR INTEROSSEI: Actions : Adduction of the lateral three digits and flexion at the metatarsophalangeal joints. Innervation : Lateral plantar nerve . DORSAL INTEROSSEI: Actions : Abduction of the lateral four digits and flexion at the metatarsophalangeal joints. Innervation : Lateral plantar nerve.