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