Muscles Of Pelvic Limb Flashcards
Groups in hip muscles
Dorsal (gluteal)
Medial group
Deep group
Caudal (hamstring)
Muscles in dorsal group
Superficial gluteal
Middle gluteal
Piriformis
Deep gluteal
Gluetofemoralis (cat)
Tensor fasciae latae
Action of dorsal group
Hip extension & limb abduction except TFL flexes hip
Muscles in medial group
Gracilis
Pectineus
Adductor
External obturator
Sartorius
Iliopsoas
Function of medial group
Limb adduction
Muscles in Caudal group
Biceps femoris
Abductor cruris caudalis
Semitendinosus
Semimembranosus
Function of caudal group
Hip & hock extensors varied action on stifle
Muscles of deep group
Internal obturator
Gemelli
Quadratus femoris
Function of deep group
Lateral rotation of the limb
Caudal gluteal nerve supplies what muscle group
Dorsal group - superficial gluteal & gluteofemoralis
(Most caudal)
Superficial gluteus
Origin
Insertion
Action
Origin - sacrum
Insertion - sacrotuberus lig
Action - extends hip joint, weak abduction
Middle gluteus
Origin
Insertion
Action
Origin - wing of ilium
Insertion - greater trochanter
Action - extends hip joint
Piriformis
Fusiform, deep to middle gluteus, carnivores only
Piriformis
Origin
Insertion
Action
Origin - sacrum & sacrotuberus lig
Insertion - greater trochanter
Action - extend hip, abduct limb
Nerve - Caudal gluteal
Deep gluteal
Origin
Insertion
Action
Origin - body of ilium
Insertion - greater trochanter
Action - extends hip
Nerve - caudal gluteal
Gluteofemoralis (caudofemoralis)
Present in cats only
Superficial muscles of thigh of cat
Sartoruis
Tensor fasciae Latae
Middle gluteus
Superficial gluteus
Caudofemorlis
Biceps femoris
Gluteofemoralis
Origin
Insertion
Action
Nerve
Origin - first few Ca vert
Insertion - patella
Action - extend hip, abduct limb
Nerve - Ca gluteal N
Biceps femoris
Origin
Insertion
Action
Nerve
Origin - sacrotuberus lig
Insertion - cranial, patella indirectly via fascia lata
Middle - tibial crest
Caudal - calcanean tuberosity via calcanean tendon
Action - extends hip, stifle, hock, flex stifle
Nerve - caudal gluteal - cranial part
Tibial n - middle & caudal parts
Abductor cruris caudalis
Origin
Insertion
Action
Nerve
Origin - sacrotuberus lig
Insertion - crural fascia
Action - abduction of the limb
Nerve - sciatic nerve
Semitendinosus
Origin
Insertion
Action
Nerve
Origin - ischiatic tuberosity
Insertion - medial aspect of tibia
Action - extends hip, hock, flex stifle
Nerve - sciatic nerve
Semimembranosus
Origin
Insertion
Action
Nerve
Origin - ischiatic tuberosity
Insertion - cranial belly on distal aspect of femur, prox to origin of medial head of gastrocnemius
Caudal belly on medial condyle of tibia
Action - cranial & caudal bellies
Extends hip, caudal belly flexes the stifle
Nerve - sciatic
Tensor fasciae latae
Origin
Insertion
Action
Nerve
Origin - tuber coxae
Insertion - fascia lata
Cranial gives rise to superficial lamina of fascia lata
Caudal gives rise to deeper lamina of fascia lata
Action - tense the fascia lata, flex hip, extend stifle
Nerve - cranial gluteal
Sartorius cranial part
Origin
Insertion
Action
Nerve
Origin - iliac crest
Insertion - patella
Action - extends stifle
Nerve - femoral nerve (saphenous)
Sartorius caudal parts
Origin
Insertion
Action
Nerve
Origin - tuber coxae
Insertion - tibial crest (medially)
Action - flexes stifle, both parts flex hip
Nerve - femoral nerve (saphenous)
Quadriceps femoris
Rectus femoris
Vastus lateralis, vastus intermedius, vastus medialis
Quadriceps femoris
Origin
Insertion
Action
Nerve
Origin
Rectus femoris: from tuberosity just cranial to the acetabulum
Vastus lateralis, intermedius, medialis: proximal femur laterally, cranially, medially respectively
Insertion: patella, through ligament to tibial tuberosity
Action: flexor of hip, extensor of stifle
Nerve: femoral nerve
Important of quadriceps femoris
Most important for weight bearing on pelvic limb
Injury to spinal cord segments (L4,5,6) -> paralysis of femoral n -> collapse of stifle jt
Used for IM
Gracilis
Origin
Insertion
Action
Nerve
Origin - pelvic symphysis via symphysial tendon
Insertion - proximal craniomedial surface of tibia, calcanean tuber
Action - adductor and a weak extensor of hock
Nerve
Adductor
Origin
Insertion
Action
Nerve
Origin - symphysial tendon, pubic tubercle
Insertion - caudal surface of femur
Adductor magnus -> lateral lip of faciei aspera
ventral to inter-trochanteric ridge
Attachment for pectineus m
Action - adductor of pelvic limb, may extend hip
Pectineus
Origin
Insertion
Action
Nerve
Origin - iliopubic eminence
Insertion - facies aspera of femur
Action -
Nerve
Femoral triangle boarders
Base - vascular lacuna & inguinal lig
Cranial - Sartorius, caudal belly
Caudal - Pectineus m
Medial - femoral fascia & skin
Lateral - Iliopsoas & vastus medialis mm
External obturator
Origin
Insertion
Action
Nerve
Origin - area around the obturator foramen externally
Insertion - trochanteric fossa
Action - adduction & lateral rotation of pelvic limb at hip
Nerve - sciatic
Internal obturator
Origin
Insertion
Action
Nerve
Origin - area around the obturator foramen internally
Insertion - trochanteric fossa
Action - lateral rotation of pelvic limb at the hip
Nerve -
In horses & carnivores only
Pig and rum, intrapelvic parts of ext obturator muscle
Gemelli
Origin
Insertion
Action
Nerve
Origin - spine of ischium
Insertion - trochanteric fossa
Action - rotate pelvic limb laterally at hip
Nerve - sciatic nerve
Quadratus femoris
Origin
Insertion
Action
Nerve
Origin - ischium - tuber ischii
Insertion - intertrochanteric crest
Action - rotate pelvic limb laterally at hip
Nerve - sciatic nerve
Pelvic diaphragm
Coccyges
Levator ani
Sublumbar muscles
Quadratus lumborum
Psoas minor
Psoas major
Iliopsoas (psoas major, iliacus)
Sublumbar muscles form
Origin
Insertion
Action
Nerve
Dorsal wall of abdominal cavity
Origin - caudal thoracic & lumbar vertebrae
Insertion - Os coxae & femur
Action - flex lumbar vertebrae
Nerve - ventral branches of lumbar n
Iliopsoas muscles
Origin
Insertion
Action
Nerve
Origin - lumbar vertebrae & ilium
Insertion - lesser trochanter of femur
Action - flex hip
Nerve - femoral n
Iliopsoas palpation
Can be palpated
At caudalvental aspect of the wing of the ilium