Semitendinosus Sciatic L4,5,S1,2 Gastrocnemius Has two heads and cross two joints (the knee and ankle) Gracilis Obturator L2,3,4 Plantaris Tibial L4, 5, S1, (2) Sartorius The longest muscle in the body Extensor Hallucis Brevis Extend the first toe Quadratus Plantae Inserts on posterior, lateral aspect of flexor digitorum longus tendon Flexor Digitorum Longus Originates on the middle, posterior surface of tibia Tensor Fasciae Latae Superior gluteal L4, 5, S1 Flexor Digiti Minimi Brevis Originate on Base of fifth metatarsal Extensor Digitorum Brevis Extends the second through fourth toes Plantar Interossei Adducts 3rd-5th toes and flexes 3rd-5th toes Tibialis Anterior Inserts at medial cuneiform and base of the first metatarsal Lumbricals of the foot First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2 Adductor Hallucis Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe Soleus Only plantar flexes the ankle Semimembranosus The wider, and deeper muscle of the hamstring group Abductor Digiti Minimi Originates on lateral process of calcaneus and plantar aponeurosis Tibialis Posterior The only muscle in the flexors of the ankle and toes group that does not flex Dorsal Interossei Abduct 2nd- 4th toes and Flex 2nd-4th toes Rectus Femoris The only quadricep muscle that also flexes hip Vastus Medialis Forms “teardrop” shape at distal portion of medial thigh Fibularis Brevis Originates at the distal two-thirds of lateral fibula Extensor Digitorum Longus Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane Abductor Hallucis Insert at proximal phalanx of first toe and medial sesamoid bone Flexor Hallucis Brevis Flex the first toe Vastus Intermedius Originates at the anterior and lateral shaft of the femur Popliteus Inserts on proximal, posterior aspect of tibia Extensor Hallucis Longus Inserts on distal phalanx of first toe Flexor Hallucis Longus Inserts on distal phalanx of first toe Biceps Femoris Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2 Vastus Lateralis Femoral L2,3,4 Flexor Digitorum Brevis The center muscle of the dorsal surface of the foot Fibularis Longus Inserts at the base of the first metatarsal and medial cuneiform Semitendinosus Sciatic L4,5,S1,2 Gastrocnemius Has two heads and cross two joints (the knee and ankle) Gracilis Obturator L2,3,4 Plantaris Tibial L4, 5, S1, (2) Sartorius The longest muscle in the body Extensor Hallucis Brevis Extend the first toe Quadratus Plantae Inserts on posterior, lateral aspect of flexor digitorum longus tendon Flexor Digitorum Longus Originates on the middle, posterior surface of tibia Tensor Fasciae Latae Superior gluteal L4, 5, S1 Flexor Digiti Minimi Brevis Originate on Base of fifth metatarsal Extensor Digitorum Brevis Extends the second through fourth toes Plantar Interossei Adducts 3rd-5th toes and flexes 3rd-5th toes Tibialis Anterior Inserts at medial cuneiform and base of the first metatarsal Lumbricals of the foot First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2 Adductor Hallucis Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe Soleus Only plantar flexes the ankle Semimembranosus The wider, and deeper muscle of the hamstring group Abductor Digiti Minimi Originates on lateral process of calcaneus and plantar aponeurosis Tibialis Posterior The only muscle in the flexors of the ankle and toes group that does not flex Dorsal Interossei Abduct 2nd- 4th toes and Flex 2nd-4th toes Rectus Femoris The only quadricep muscle that also flexes hip Vastus Medialis Forms “teardrop” shape at distal portion of medial thigh Fibularis Brevis Originates at the distal two-thirds of lateral fibula Extensor Digitorum Longus Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane Abductor Hallucis Insert at proximal phalanx of first toe and medial sesamoid bone Flexor Hallucis Brevis Flex the first toe Vastus Intermedius Originates at the anterior and lateral shaft of the femur Popliteus Inserts on proximal, posterior aspect of tibia Extensor Hallucis Longus Inserts on distal phalanx of first toe Flexor Hallucis Longus Inserts on distal phalanx of first toe Biceps Femoris Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2 Vastus Lateralis Femoral L2,3,4 Flexor Digitorum Brevis The center muscle of the dorsal surface of the foot Fibularis Longus Inserts at the base of the first metatarsal and medial cuneiform
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N-Sciatic L4,5,S1,2
M-Has two heads and cross two joints (the knee and ankle)
N-Obturator L2,3,4
N-Tibial L4, 5, S1, (2)
M-The longest muscle in the body
A-Extend the first toe
I-Inserts on posterior, lateral aspect of flexor digitorum longus tendon
O-Originates on the middle, posterior surface of tibia
N-Superior gluteal L4, 5, S1
O-Originate on Base of fifth metatarsal
A-Extends the second through fourth toes
A-Adducts 3rd-5th toes and flexes 3rd-5th toes
I-Inserts at medial cuneiform and base of the first metatarsal
N-First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2
A- Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe
A-Only plantar flexes the ankle
M-The wider, and deeper muscle of the hamstring group
O-Originates on lateral process of calcaneus and plantar aponeurosis
M-The only muscle in the flexors of the ankle and toes group that does not flex
A-Abduct 2nd-4th toes and Flex 2nd-4th toes
M-The only quadricep muscle that also flexes hip
M-Forms “teardrop” shape at distal portion of medial thigh
O-Originates at the distal two-thirds of lateral fibula
O-Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane
I-Insert at proximal phalanx of first toe and medial sesamoid bone
A- Flex the first toe
O-Originates at the anterior and lateral shaft of the femur
I-Inserts on proximal, posterior aspect of tibia
I-Inserts on distal phalanx of first toe
I-Inserts on distal phalanx of first toe
N-Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2
N-Femoral L2,3,4
M-The center muscle of the dorsal surface of the foot
I-Inserts at the base of the first metatarsal and medial cuneiform
