Posterior Leg and Plantar Foot Muscles Flashcards
Gastrocnemius M.
Action: Plantarflexion with extended knee, elevate heel, flex leg
Innervation: Tibial N.
Blood Supply: Sural A.
Soleus M. (deep to gastrocnemius)
Action: Plantarflexion of foot at ankle
Innervation: Tibial N.
Blood Supply: Posterior tibial, peroneal and sural A.
Plantaris M.
Action: Weakly assist in plantarflexion and flexing the knee
Innervation: Tibial N.
Blood Supply: Sural A.
Popliteus M.
Action: Weakly flex the knee
Innervation: Tibial N.
Blood Supply: medial inferior genicular A. / posterior tibial A.
Flexor Hallucis Longus M.
Action: Flex the hallux, weakly plantarflex the foot at ankle
Innervation: Tibial N.
Blood Supply: Peroneal and posterior tibial A.
Flexor Digitorum Longus M.
Action: Flex digits 2-5, plantar flex the foot at ankle
Innervation: Tibial N.
Blood Supply: Posterior Tibial A.
Tibialis Posterior M.
Action: Plantarflexion and inversion
Innervation: Tibial N.
Blood Supply: Sural, peroneal, and posterior tibial A.
Extensor Digitorum Brevis M.
Action: Extend digits 2-5
Innervation: Deep fibular N.
Blood Supply: dorsal A.
Extensor Hallucis Brevis M.
Action: Extend the hallux at the metatarsophalangeal joint
Innervation: Deep fibular N.
Blood Supply: Dorsal A.
Abductor Hallucis M.
Action: Abduct and flex the hallux
Innervation: Medial Plantar N.
Blood Supply: Plantar A.
Flexor Digitorum Brevis M.
Action: Flex digits 2-5
Innervation: Medial Plantar N.
Blood Supply: Plantar A.
Abductor Digiti Minimi M.
Action: Abduct and flex 5th digit
Innervation: Lateral Plantar N.
Blood Supply: Plantar A.
Quadratus Plantae M.
Action: Assist in flexing digits 2-5
Innervation: Lateral plantar N.
Blood Supply: Plantar A.
Lumbrical MM.
Action: Flex metatarsophalangeal joint, extend proximal and distal interphalangeal joints
Innervation: 1st: medial plantar N. 2-4th:lateral plantar N.
Blood Supply: Plantar A.
Flexor Hallucis Brevis M.
Action: Flex 1st proximal phalanx
Innervation: Medial plantar N.
Blood Supply: Plantar A.
Flexor digiti minimi M.
Action: flex proximal phalanx of 5th digit
Innervation: superficial lateral plantar N.
Blood Supply: Plantar A.
Adductor Hallucis M.
Action: Adduct hallux
Innervation: Deep lateral plantar N.
Blood Supply: Plantar A.
Dorsal Interossei MM.
Action: Abduct digits 2-4, flex metatarsalphalangeal joint
Innervation: Lateral plantar N.
Blood Supply: Plantar A.
Plantar Interossei MM.
Action: Adduct digits 3-5, flex metatarsaophalangeal joint
Innervation: Lateral plantar N
Blood Supply: Plantar A.
