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