Term
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Definition
Origin: Iliac crest of ilium, sacrum, coccyx, and lumbodorsal fascia
Insertion: Illiotibial tract and gluteal tuberosity of femur
Action: Extends and laterally rotates thigh
Innervation: Inferior gluteal nerve |
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Term
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Definition
Origin: Anterior Iliac crest of ilium, lateral surface of ilium between superior and inferior lines
Insertion: Greater trochanter of femur
Action: Abducts and medially rotates thigh
Innervation: Superior gluteal nerve |
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Term
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Tensor Fasciae Latae |
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Definition
Origin: Iliac crest and surface of ilium between anterior iliac spines
Insertion: Iliotibial tract
Action: Flexes, abducts, and medially rotates thigh; tenses fasciae latae, which laterally supports the knee
Innervation: Superior gluteal nerve |
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Term
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Definition
Origin: lateral surface of ilium between inferior and anterior gluteal lines
Insertion: iliotibial tract
Action: Abducts and medially rotates thigh
Innervation: Superior gluteal nerve |
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Term
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Definition
Origin: Inferior ramus of pubis
Insertion: linea aspera of femur
Action: adducts thigh
Innervation: obturator nerve |
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Term
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Definition
Origin: Inferior ramus of pubis anterior to adductor brevis
Insertion: Linea aspera of femur
Action: Adducts, flexes, and medially rotates thigh
Innervation: obturator nerve |
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Term
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Definition
Origin: Inferior ramus of pubis posterior to adductor brevis
Insertion: Linea aspera of femur
Action: adducts thigh; anterior portion flexes thigh, posterior portion extends thigh
Innervation: obturator and sciatic nerves |
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Term
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Definition
Origin: Superior ramus of pubis
Insertion: Pectineal line inferior to lesser trochanter of femur
Action: Flexion, medial rotation, and adduction at hip
Innervation: Femoral nerve (L2-L4) |
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Term
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Definition
Origin: Iliac fossa of ilium
Insertion: Femur distal to lesser trochanter; tendon fused with that of psoas
Action: Flexes hip and/or lumbar spine
Innervation: Femoral nerve (L2-L3) |
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Term
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Definition
Origin: Anterior surfaces of vertebrae T12-L5
Insertion: femur distal to lesser trochanter; fused with iliacus
Action: Flexes hip and/or lumbar spine
Innervation: Branches of the lumbar plexus (L2-L3) |
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Term
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Definition
Origin: Long Head: Ischial tuberosity
Short Head: linea aspera of femur
Insertion: Head of fibula
Action: Short Head: Flexes leg
Long Head: extends thigh
Innervation: Long Head: Tibial nerve
Short Head: common fibular nerve |
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Term
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Semimembranosus
(hamstring) |
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Definition
Origin: Ischial tuberosity
Insertion: Posterior surface of medial condyle of tibia
Action: Flexes leg; extends thigh
Innervation: tibial nerve |
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Term
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Semitendinosus
(hamstring) |
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Definition
Origin: Ischial tuberosity
Insertion: Proximal, posteromedial surface of tibia near insertion of gracilis
Action: Flexes leg; extends thigh
Innervation: tibial nerve |
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Term
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Definition
Origin: pubis
Insertion: anterior surface of tibia inferior to medial condyle
Action: Flexes leg and adducts thigh
Innervation: Obturator nerve |
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Term
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Definition
Origin: Anterior superior iliac spine
Insertion: Medial surface of tibia near tibial tuberosity
Action: Flexes leg, flexes and laterally rotates thigh
Innervation: Femoral nerve |
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Term
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Rectus Femoris
(quadriceps) |
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Definition
Origin: Anterior inferior iliac spine
Insertion: Patella via a common quadriceps tendon
Action: Extends leg, flexes thigh
Innervation: Femoral nerve |
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Term
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Vastus Intermedius
(quadriceps) |
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Definition
Origin: Femur
Insertion: Patella via a common quadriceps tendon
Action: Extends leg
Innervation: Femoral nerve |
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Term
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Vastus Lateralis
(quadriceps) |
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Definition
Origin: Femur
Insertion: Patella via a common quadriceps tendon
Action: Extends leg
Innervation: Femoral nerve |
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Term
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Vastus Medialis
(quadriceps) |
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Definition
Origin: Femur
Insertion: patella via a common quadriceps tendon
Action: Extends leg
Innervation: Femoral nerve |
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Term
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Tibialis Anterior |
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Definition
Origin: Lateral shaft of tibia, interosseous membrane
Insertion: Base metatarsal I, medial cuneiform bone
Action: Dorsiflexion and inversion of foot
Innervation: Deep fibular nerve |
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Term
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Definition
Origin: Medial belly: medial femoral condyle
Lateral belly: lateral femoral condyle
Insertion: Calcaneus via calcaneal tendon
Action: Plantar flexion of foot, flexes leg
Innervation: Tibial branch |
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Term
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Definition
Origin: shaft of fibula
Insertion: base of 5th metatarsal
Action: everts foot
Innervation: Superficial fibular nerve |
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Term
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Definition
Origin: shaft of fibula
Insertion: Base of 1st metatarsal
Action: Everts and plantar flexes foot
Innervation: Superficial fibular nerve |
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Term
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Definition
Origin: Proximal posterior shaft of tibia and fibula
Insertion: Calcaneus via calcaneus tendon
Action: Plantar flexion at ankle; postural muscle when standing
Innervation: Tibial nerve |
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Term
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Tibialis Posterior |
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Definition
Origin: Proximal posterior shaft of tibia and fibula; Interosseous membrane
Insertion: Navicular and cuneiform; metatarsals II-IV
Action: Plantar flexes and inverts foot
Innervation: Tibial nerve |
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Term
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Definition
Origin: Posterior distal shaft of femur
Insertion: Calcaneus
Action: Plantar flexion of foot; flexion of leg
Innervation: Tibial nerve |
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Term
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Flexor Digitorum Longus |
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Definition
Origin: Posterior middle shaft of tibia
Insertion: Inferior surfaces of phalanges, toes 2-5
Action: Plantar flexes toes 2-5, Plantar flexion and inversion of foot
Innervation: Tibial branch |
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Term
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Flexor Hallucis Longus |
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Definition
Origin: Posterior shaft of fibula; Interosseous membrane
Insertion: Distal phalanx of big toe
Action: Plantar flexes big toe, plantar flexion and inverson of foot |
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Term
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Extensor Digitorum Longus |
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Definition
Origin: Lateral condyle of tibia, anterior surface of fibula, interosseous membrane
Insertion: Distal phalanges, toes 2-5
Action: Extension of toes 2-5
Innervation: Deep fibular nerve |
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Term
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Extensor Digitorum Brevis |
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Definition
Origin: Dorsal calcaneus
Insertion: Joins tendon of extensor digitorum longus to toes 2-4
Action: Extension of toes 2-4
Innervation: Deep fibular nerve |
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Term
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Extensor Hallucis Longus |
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Definition
Origin: Anterior shaft of fibula; Interosseous membrane
Insertion: Distal phalanx of big toe
Action: Extends big toe; inversion and dorsiflexion of foot
Innervation: Deep fibular nerve |
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Term
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Extensor Hallucis Longus |
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Definition
Origin: Dorsal calcaneus
Insertion: Dorsal surface of proximal phalanx of big toe
Action: Extension of big toe
Innervation: Deep fibular nerve |
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