Lower Extremity Myology

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Author:
mbatx
ID:
155950
Filename:
Lower Extremity Myology
Updated:
2012-06-10 13:48:57
Tags:
LE muscles
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Description:
TxST DPT LE MM PKT
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  1. PECTINEUS
    PA: Superior ramus of pubis

    • DA: Pectineal line of femur
    • A: Hip Adduction, IR, & Flexion
    • N: Femoral (L2, L3) may receive a branch from obturator nn.

  2. RECTUS FEMORIS
    PA: AIIS (straight head) & ilium superior to acetabulum (reflected head)

    DA: Quadriceps tendon; Patella, tibial tubercle via patellar
    ligament.

    A: Hip flexion, knee extension

    • N: Femoral (L2, L3, L4)
  3. ARTICULARIS GENU
    PA: Inf part of ant aspect of femur

    DA: Synovial membrane of knee & suprapatellar bursa

    A: Pulls synovial membrane sup. during knee ext.

    N: Femoral (L2, L3, L4)

  4. ADDUCTOR BREVIS
    PA: Body & inf ramus of pubis

    DA: Pectineal line of femur & proximal linea aspera

    A: Hip adduction & flexion

    • N: Obturator (L2, L3, L4)
  5. ADDUCTOR LONGUS
    PA: Body of pubis inf to pubic crest

    DA: Middle 3rd linea aspera

    A: Hip adduction

    N: Obturator (L2, L3, L4)

  6. ADDUCTOR MAGNUS
    • PA: HS: Ischial Tuberosity
    • AD: Ramus of ischium & inf ramus of pubis

    • DA: HS: Adductor Tubercle
    • AD: Gluteal tuberosity, linea aspera, medial supracondylar line

    • A: HS: Hip add & ext
    • AD: Hip add & flex

    • N: HS: Tibial (L4)
    • AD: Obturator (L2, L3, L4)


  7. GRACILIS
    PA: Body & inf ramus of pubis

    DA: Sup surface of medial tibial (pes anserine)

    A: Hip adduction, knee flex & tibial IR

    N: Obturator (L2, L3)

  8. FIBULARIS TERTIUS
    PA: Ant inf fibula & interosseous membrane

    DA: Dorsal surface of base of 5th metatarsal

    A: Ankle DF, Foot eversion

    • N: Deep Fibular (L5, S1)
  9. PLANTARIS
    PA: Lat supracondylar line, oblique popliteal lig.

    DA: Calcaneus via calcaneal tendon

    A: Weak knee flex & ankle PF

    • N: Tibial (S1, S2)
  10. POPLITEUS
    PA: Lat condyle of femur, lat meniscus

    DA: Post tibia sup to soleal line

    A: Tibial IR to "unlock" knee, knee flex, retracts lat meniscus

    • N: Tibial (L4, L5, S1)
  11. FLEXOR HALLICUS LONGUS
    PA: Inf post fibula, inf interosseous membrane

    DA: Base of distal phalanx of hallux

    A: MP & IP flex of hallux, ankle PF, supports med longitudinal arch

    N: Tibial (S1, S2, S3)

  12. FLEXOR DIGITORUM LONGUS
    PA: Post tibia inf to soleal line, fibula via broad tendon

    DA: Base of distal phalnages 2nd - 5th digits

    A: MP, PIP, DIP flex of 2nd -5th digits, ankle PF, supports longitudinal arches of foot

    • N: Tibial (S1, S2, S3)
  13. TIBIALIS POSTERIOR
    PA: Post fibula, post tibia inf to soleal line, interosseous membrane

    DA: Navicular tuberosity, 3 cuneiforms, cuboid, sustentaculum tali, bases of 2-4th metatarsals

    A: Ankle PF, foot inversion

    • N: Tibial (L4, L5)
  14. EXTENSOR DIGITORUM BREVIS
    PA: Calcaneus (floor of tarsal sinus), interosseous talocalcaneal lig, stem of inf extensor retinaculum

    DA: Med slip: prox phalanx of hallux. Lat slip: join EDL tendons to 2nd-4th digits

    A: Med slip: MP ext of hallux. Lat slip: MP, PIP, DIP ext of 2nd -4th digits

    • N: Deep fibular (L5, S1)
  15. ABDUCTOR HALLICUS
    PA: Med tubercle of calcaneal tuberosity, flexor retinaculum, plantar aponeurosis

    DA: Med side of base of prox phalanx of hallux

    A: MP abd & hallux flex

    • N: Med plantar (S2, S3)
  16. FLEXOR DIGITORUM BREVIS
    PA: Med tubercle of calcaneal tuberosity, plantar aponeurosis, intermuscular septum

    DA: Middle phalanges of 2-5th digits

    A: MP & PIP flex of 2-5th digits

    • N: Medial Plantar (S2,S3)
  17. ABDUCTOR DIGITI MINIMI
    PA: Med & Lat tubercles of calcaneal tuberosity, plantar aponeurosis, intermuscular septum

    DA: base of prox phalanx of 5th digit

    A: MP abd & flex of 5th digits

    N: Lateral Plantar (S2, S3)

  18. QUADRATUS PLANTAE
    PA: Med surface & Lat margin of plantar surface of calcaneus

    DA: flexor digitorum longus tendon

    A: MP, PIP, DIP flex of 2-5th digits

    • N: Lateral Plantar (S2, S3)
  19. LUMBRICALS
    • PA: Tendons of flexor digitorum longus
    • DA: Expansions of 2-5th digits

    A: MP flex, DIP & PIP ext 2-5th digits

    • N: Medial lumbricals 1st: Medial Plantar (S2,S3) Lateral lumbricals 2-4th: Lateral Plantar (S2,S3)
  20. FLEXOR HALLICUS BREVIS
    PA: Plantar surface of cuboid & lateral cuneiform

    DA: base of prox phalanx of hallux

    A: MP flex of hallux

    • N: Medial Plantar (S2, S3)
  21. ADDUCTOR HALLICUS
    PA: Oblique head: bases of 2-4th metatarsals. Transverse head: plantar ligaments of MP jts.

    DA: Base of prox phalanx of hallux

    A: MP add of 1st digit. Supports transverse arch

    • N: Deep branch of Lateral Plantar (S2, S3)
  22. FLEXOR DIGITI MINIMI BREVIS
    PA: Base of 5th metatarsal

    DA: Base of prox phalanx of 5th digit

    A: MP flex of 5th digit

    • N: Superficial branch of Lateral Plantar (S2,S3)
  23. DORSAL INTEROSSEI
    PA: Adjacent sides of 1-5th metatarsals

    DA: 1st: medial side of prox phalanx of 2nd digit. 2-4th: lat sides of prox phalanx of 2-4th digits

    A: MP abd & flex of 2-4th digits

    • N: Lateral Plantar (S2, S3)
  24. PLANTAR INTEROSSEI
    PA: Bases & med sides of 3-5th metatarsals

    DA: Med sides of prox phalanx 3-5th digits

    A: MP add & flex of 3-5th digits

    • N: Lateral Plantar (S2,S3)

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