Canine Thoracic Limb

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Author:
mhuey
ID:
111240
Filename:
Canine Thoracic Limb
Updated:
2011-10-22 23:16:09
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Anatomy
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  1. tensor fasciae latae muscle
    att: tuber coxae, ilium, lateral femoral fascia

    action: flex hip, extend stifle
  2. superficial gluteal muscle
    att: lateral sacrum, 1st caudal vertebrae, 3rd trochanter

    actions: abduct limb, extend hip

    caudal most gluteal muscle
  3. gluteofemoral muscle
    • FELINE ONLY
    • narrow muscle band between superficial gluteal muscle and biceps femoris muscle of thigh
    • function: retraction, abduction of limb , extension of hip, lateral movements of tail when limb fixed
  4. middle gluteal muscle
    att: iliac crest, gluteal surface, 3rd trochanter

    action: extend & abducts hip, roatate pelvic limb medially
  5. trochanteric bursa
    where middle gluteal muscle courses over greater trochanter
  6. deep gluteal muscle
    att: body of ilium, ischiatic spine, greater trochanter

    action: extend & abduct hip, rotate pelvic limb medially

    completely covered by middle gluteal muscle
  7. piriformis muscle
    deep caudal portion of middle gluteal muscle, separated from main muscle mass
  8. internal obturator muscle
    att: pubic symphysis, dorsal ischium & pubis, trochanteric fossa of femur

    action: rotates pelvic limb laterally at hip

    lateral aspect/ tendon of internal obturator muscle rotates pelvic limb laterally at hip
  9. gemelli muscle
    att: lateral surface of ischium, trochanteric fossa

    action: rotates pelvic limb laterally at hip
  10. quadratus femoris muscle
    att: ventral surface of caudal part of ischium, intertrochanteric crest of femur

    action: extend hip, rotate pelvic limb laterally

    deep to biceps femoris muscle, short & thick, below gemelli muscle
  11. external obturator muscle
    att: ventral surface of pubis & ischium, trochanteric fossa of femur

    action: rotates pelvic limb laterally

    covers obturator foramen on ventral side/ fan shapped
  12. biceps femoris muscle
    att: ischiatic tuberosity, patella, cranial tibia, tuber calcanei

    action: extend hip, stifle & hock, caudal part flexes stifle
  13. popliteal lymph node
    lying in fat at caudal border of biceps femoris, directly caudal to stifle
  14. common calcanean tendon
    • tendons of gastrocnemius muscle & SDF mm.
    • tendons of semitendinosus, biceps femoris, gracilis mm. form fascial sheath around other 2 tendons, so are considered part of it as well
  15. sciatic nerve
    • deep to biceps femoris muscle
    • important to realize location when administering IM injections
    • innervates: internal obturator, gemelli, quadratus femoris, biceps femoris, semitendinosus, semimembranosus
  16. semimembranosus muscle
    att: tuber ischii, caudal rough surface of femur, proximal end of tibia

    action: extends hip, part attaching to femur extends stifle, part attaching to tibia flexes or extends stifle
  17. semitendinosus muscle
    att: tuber ischii, tibial tuberosity, tuber calcanei

    action: extends hip & hock, flexes stifle
  18. sartorius muscle
    cranial part: att: crest of ilium, patella; action: extends stifle

    caudal part: att: tuber coxae, cranial tibia; action: flex stifle

    BOTH: flex hip
  19. gracilis muscle
    att: pubic symphysis, cranial tibia, tuber calcanei

    action: adduct limb, flex stifle, extend hip & hock

    caudal/medial aspect of limb
  20. femoral triangle
    • located on proximal medial surface of thigh with its base at abdominal wall
    • contains femoral artery & vein
    • pulse usually taken from artery here
    • 3 palpable borders: cranial border=caudal border of sartorius muscle; caudal border=pectineus muscle; dorsal border= iliopsoas muscle
  21. symphysial tendon
    • thick, flat, attached ventrally to pubic symphysis
    • gracilis muscle arises from this
  22. pectineus muscle
    att: iliopubic eminence, caudal rough face of femur

    action: adduct limb

    medial aspect, small/spindle-shaped
  23. adductor muscle
    att: pubic symphysis, ischiatic arch, caudal rough face of femur

    action: adduct limb, extend hip

    large pyramidal muscle, between pectineus and semimembranosus
  24. quadriceps femoris muscle
    • rectus femoris m.: arises from ilium, so only one with action on coxofemoral joint (flexes hip)
    • vastus lateralis m.
    • vastus intermedius m.
    • vastus medialis m.
    • all vastus arise from proximal femur
    • all 4 attach on tibial tuberosity
    • MOST powerful extensor of stifle & necessary for animal to support its weight, flexes hip
    • anti-gravity m.
  25. patella
    • sesamoid bone that articulates with trochlea of femur
    • intercalated in strong tendon of insertion of quadriceps femoris m.
  26. patellar ligament
    • att: patella, tibial tuberosity
    • distal end of tendon of insertion of quadriceps femoris m.
  27. iliopsoas muscle
    att: fusion of psoas muscle (lumbar vertebrae) & iliacus mm. (cranioventral ilium), lesser trochanter

    action: MAJOR flexor of hip
  28. cranial tibial muscle
    att: extensor groove of tibia, plantar surface base of metatarsals 1 & 2

    action: flex tarsus when acting with peroneus longus muscle, supinate tarsus when working alone
  29. long digital extensor muscle
    att: extensor fossa of femur, extensor process of distal phalanges of digits 2-5

    action: extend digits, flex tarsus
  30. crural extensor retinaculum
    binds down long digital extensor m. and cranial tibial m.
  31. peroneus longus muscle
    att: lateral condyle of tibia, proximal end fibula, lateral epicondyle of femur, 4th tarsal bone on plantar surface

    action: flex tarsus when working with cranial tibial muscle, pronate tarsus when working alone
  32. what 2 muscles work together and act as a sling to flex the tarsus?
    cranial tibial muscle and peroneus longus muscle

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