Tibialis Anterior Inserts at medial cuneiform and base of the first metatarsal Flexor Digitorum Longus Originates on the middle, posterior surface of tibia Extensor Digitorum Longus Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane Plantaris Tibial L4, 5, S1, (2) Semitendinosus Sciatic L4,5,S1,2 Fibularis Brevis Originates at the distal two-thirds of lateral fibula 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 Hallucis Brevis Flex the first toe Lumbricals of the foot First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2 Tensor Fasciae Latae Superior gluteal L4, 5, S1 Flexor Digiti Minimi Brevis Originate on Base of fifth metatarsal Biceps Femoris Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2 Popliteus Inserts on proximal, posterior aspect of tibia Gracilis Obturator L2,3,4 Adductor Hallucis Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe Abductor Digiti Minimi Originates on lateral process of calcaneus and plantar aponeurosis Extensor Digitorum Brevis Extends the second through fourth toes Plantar Interossei Adducts 3rd-5th toes and flexes 3rd-5th toes Rectus Femoris The only quadricep muscle that also flexes hip Dorsal Interossei Abduct 2nd- 4th toes and Flex 2nd-4th toes Fibularis Longus Inserts at the base of the first metatarsal and medial cuneiform Soleus Only plantar flexes the ankle Extensor Hallucis Brevis Extend the first toe Flexor Digitorum Brevis The center muscle of the dorsal surface of the foot Gastrocnemius Has two heads and cross two joints (the knee and ankle) Quadratus Plantae Inserts on posterior, lateral aspect of flexor digitorum longus tendon Vastus Medialis Forms “teardrop” shape at distal portion of medial thigh Flexor Hallucis Longus Inserts on distal phalanx of first toe Extensor Hallucis Longus Inserts on distal phalanx of first toe Vastus Intermedius Originates at the anterior and lateral shaft of the femur Sartorius The longest muscle in the body Abductor Hallucis Insert at proximal phalanx of first toe and medial sesamoid bone Vastus Lateralis Femoral L2,3,4 Tibialis Anterior Inserts at medial cuneiform and base of the first metatarsal Flexor Digitorum Longus Originates on the middle, posterior surface of tibia Extensor Digitorum Longus Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane Plantaris Tibial L4, 5, S1, (2) Semitendinosus Sciatic L4,5,S1,2 Fibularis Brevis Originates at the distal two-thirds of lateral fibula 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 Hallucis Brevis Flex the first toe Lumbricals of the foot First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2 Tensor Fasciae Latae Superior gluteal L4, 5, S1 Flexor Digiti Minimi Brevis Originate on Base of fifth metatarsal Biceps Femoris Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2 Popliteus Inserts on proximal, posterior aspect of tibia Gracilis Obturator L2,3,4 Adductor Hallucis Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe Abductor Digiti Minimi Originates on lateral process of calcaneus and plantar aponeurosis Extensor Digitorum Brevis Extends the second through fourth toes Plantar Interossei Adducts 3rd-5th toes and flexes 3rd-5th toes Rectus Femoris The only quadricep muscle that also flexes hip Dorsal Interossei Abduct 2nd- 4th toes and Flex 2nd-4th toes Fibularis Longus Inserts at the base of the first metatarsal and medial cuneiform Soleus Only plantar flexes the ankle Extensor Hallucis Brevis Extend the first toe Flexor Digitorum Brevis The center muscle of the dorsal surface of the foot Gastrocnemius Has two heads and cross two joints (the knee and ankle) Quadratus Plantae Inserts on posterior, lateral aspect of flexor digitorum longus tendon Vastus Medialis Forms “teardrop” shape at distal portion of medial thigh Flexor Hallucis Longus Inserts on distal phalanx of first toe Extensor Hallucis Longus Inserts on distal phalanx of first toe Vastus Intermedius Originates at the anterior and lateral shaft of the femur Sartorius The longest muscle in the body Abductor Hallucis Insert at proximal phalanx of first toe and medial sesamoid bone Vastus Lateralis Femoral L2,3,4
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I-Inserts at medial cuneiform and base of the first metatarsal
O-Originates on the middle, posterior surface of tibia
O-Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane
N-Tibial L4, 5, S1, (2)
N-Sciatic L4,5,S1,2
O-Originates at the distal two-thirds of lateral fibula
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
A- Flex the first toe
N-First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2
N-Superior gluteal L4, 5, S1
O-Originate on Base of fifth metatarsal
N-Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2
I-Inserts on proximal, posterior aspect of tibia
N-Obturator L2,3,4
A- Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe
O-Originates on lateral process of calcaneus and plantar aponeurosis
A-Extends the second through fourth toes
A-Adducts 3rd-5th toes and flexes 3rd-5th toes
M-The only quadricep muscle that also flexes hip
A-Abduct 2nd-4th toes and Flex 2nd-4th toes
I-Inserts at the base of the first metatarsal and medial cuneiform
A-Only plantar flexes the ankle
A-Extend the first toe
M-The center muscle of the dorsal surface of the foot
M-Has two heads and cross two joints (the knee and ankle)
I-Inserts on posterior, lateral aspect of flexor digitorum longus tendon
M-Forms “teardrop” shape at distal portion of medial thigh
I-Inserts on distal phalanx of first toe
I-Inserts on distal phalanx of first toe
O-Originates at the anterior and lateral shaft of the femur
M-The longest muscle in the body
I-Insert at proximal phalanx of first toe and medial sesamoid bone
N-Femoral L2,3,4
