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