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