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