Lower limb

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Author:
pretty4Jesus
ID:
51967
Filename:
Lower limb
Updated:
2010-12-06 02:39:06
Tags:
Anatomy Final
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Description:
leg, foot, thigh, knee, etc
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  1. Innervation of muscles of posterior compartment of the thigh
    sciatic n.
  2. Innervation of muscles of medial compartment of the thigh
    ALL obturator n.
  3. Innervation of muscles of anterior compartment of the thigh
    femoral n.
  4. Popliteus m
    • 1. medial rotates
    • 2. "unlocks" knee
    • 3. flexes knee
  5. Flexor hallus longus
    • 1. Flexor of hallux
    • 2. Plantarflexor
    • 3. Invertor
  6. Extensor digitorum longus
    • 1. Dorsiflexor
    • 2. Evertor
    • 3. Extensor of 2-5
  7. Peroneus tertius
    • Shaft of 5th metatarsal
    • 1. Evertor
    • 2. Dorsiflexor

    deep peroneal n
  8. Peroneus longus
    • 1. Evertor
    • 2. Plantarflexor

    superficial peroneal n.
  9. Peroneus brevis
    • 1. Evertor
    • 2. Plantarflexor

    superficial peroneal n.
  10. Medial longitudinal arch
    • Bones- *talus*, calcaneus, navicular, 3 cuneiforms, medial 3 MTs
    • Spring ligament
    • tendon of tibialis posterior (when active)
  11. Lateral longitudinal arch
    • Bones- calcaneus, *cuboid*, lateral 2 MTs
    • long plantar ligament
    • short plantar ligament
    • tendon of peroneus longus
  12. Transverse arch
    • Bones- navicular, 3 cuneiforms, cuboid, 5 MTs
    • shaped like arc, so both feet standing together make arch
  13. Sacral plexus
    lumbosacral trunk + S1 - S4
  14. Cutaneous-- lateral thigh (from what plexus?)
    lateral cutan of thigh, lumbar plexus
  15. Cutaneous-- anterior thigh (from what plexus?)
    femoral n, lumbar plexus
  16. Cutaneous-- medial thigh (from what plexus?)
    obturator n, lumbar plexus
  17. Cutaneous-- posterior thigh (from what plexus?)
    posterior cutaneous n. of thigh, sacral plexus
  18. Pes anserinus (common action)
    • sartorius, gracilis, semitendinosus
    • -flexes knee
  19. Action: posterior compartment of thigh
    • extends hip:
    • EXCEPTION: short head, biceps femoris is common peroneal. DOES NOT cross hip

    The hamstrings- ALL flex knee
  20. Exception: INVERTORS from anterior compartment
    • Tibialis anterior
    • Extensor HALLUCIS longus
  21. Medial Compartment of thigh
    • -ALL oburator
    • -ADDuct hip

    • 1. Gracilis- also, flex knee
    • 2. Adductor longus
    • 3. Adductor brevis
    • 4. Adductor magnus
  22. Gluteus medius
    Gluteus maximus
    Tensor fasciae latae
    superior gluteal n.

    • Abduct, medial rotate hip
    • Tenor Fasciaw latae- ALSO-- flexes hip
  23. Lateral rotators of hip
    gluteus maximus, sartorius, piriformis, superior gemellus, obturator internis, inferior gemellus, obturator externus, quadratus femoris
  24. Iliopsoas
    MOST PWRFUL flexe or hip

    • L1-L3 (psoas)
    • femoral (iiacus)
  25. Pectineus
    femoral and obturator n.

    flex hip, adducts hip
  26. interossei
    lateral plantar n.
  27. Cutaneous of anterior leg
    • 1. Medial two-thirds – saphenous
    • 2. Lateral one-third – sural
    • 3. Superficial peroneal innervates some distal lateral skin
  28. Cutaneous of posterior leg
    • 1. Medial one-third – saphenous
    • 2. Lateral two-thirds – sural
  29. Plantar surface: Motor innerv
    LAFF muscles
    medial plantar nerve

    • 1. First lumbrical
    • 2. Abductor hallucis
    • 3. Flexor hallucis brevis
    • 4. Flexor digitorum brevis

    Remainder--> lateral plantar nerve
  30. extensor digitorum brevis
    extensor hallucis brevis
    deep peroneal n.

    extend digits 2-4, extends hullux, respectively
  31. Iliohypogastric nerve
    (L1), supplies skin over the iliac crest and pubic region; motor to internal oblique and transversus abdominis muscles.
  32. Ilioinguinal nerve
    • (L1), skin of the external genitalia and adjacent medial thigh; motor to internal
    • oblique and transversus abdominis muscles
  33. Genitofemoral nerve
    genital branch to skin of external genitalia; motor to cremaster muscle.

    femoral branch to skin of anterior superior thigh.
  34. Lateral femoral cutaneous
    skin on the lateral surface of the thigh
  35. Femoral nerve
    abdomen, motor to the iliacus; continues to lower extremity
  36. Obturator nerve
    supplies hip adductor muscles and small patch of skin on the thigh
  37. Lumbosacral trunk
    joins sacral plexus in supplying pelvis and rest of lower extremity

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