Pelvic Limb Flashcards
Biceps Femoris
** contributes to common calcanean tendon
O: sacrotuberous ligament and ischiatic tuberosity
I: Patella, patellar ligament, cranial border of the tibia via the fascia lata and crural fascia
- tuber calcanei via common calcanean tendon
A: Extend hip stifle and hock / can flex stifle when not bearing weight
Semitendinosis
** contributor to common calcanean tendon
O: ischiatic tuberosity
I: Medial surface of tibial body , tuber calcanei via common calcanean tendon
A: extend hip, flex stifle, extend hock
semimembranosis
O: ischiatic tuberosity
I: distal and medial aspect of the caudal femur and medial condyle of the tibia
A: Extend hip, extend or flex stifle depending on the limb position
Sartorius
** caudal part form the cranial boxer of the femoral triangle
O: crest of ilium and thoracolumnar fascia. ventral border of ilium
I: patella and cranial border of the tibia
A: flex hip, extend stifle (weight bearing), flex stifle (not bearing weight)
Gracilis
** contributor to common calcanean tendon
O: Pelvic symphysis via symphysial tendon
I: cranial border of tibia - tuber calcanei via common calcanean tendon
A: Adduct limb, flex stifle, extend hip and hock
Pectineus
**caudal border of femoral triangle
O: pubis (prepubic tendon and iliopubic eminence)
I: distal end of caudomedial aspect of femur (medial lip of caudal rough surface)
A: adduct limb
Adductor
O: Pelvic symphysis via sympysial tendon. ventral surface of pubis and ischium
I: caudolateral aspect of femur (entire lateral lip of caudal rough surface of femur)
A: adduct limb, extend hip
tensor fasciae latae
O: tuber coxae. Aponeurosis of middle gluteal m.
I: lateral femoral fascia (fascia lata)
A: tense fascia lata. flex hip, extend stifle
superficial gluteal
O: sacrotuberous ligament. deep gluteal fascia
I: third trochanter of the femur
A: extend hip. abduct limb
middle gluteal
**piriformis muscle is considered part of the middle gluteal
O: crest and gluteal surface of ilium
I: greater trochanter of femur
A: extend hip. abduct hip. rotate pelvic limb medially
deep gluteal
O: body of ilium, ischiatic spine
I: greater trochanter of the femur
A: extend hip. abduct hip. rotate pelvic limb medially
Internal Obturator
**has a subtendinous bursa and the tendon passes over the lesser ischiatic notch
O:Dorsal surface of ischium and pubis. dorsal pelvic symphysis
I: trochanteric fossa of the femur
A: rotate the pelvic limb laterally
Gemelli
O: lateral surface of the ischium. ventral to the lesser ischiatic notch
I: trochanteric fossa of the femur
A: rotate the pelvic limb laterally
Quadratus femoris
O: ventral surface of caudal ischium
I: intertrochanteric crest of the femur
A: rotate pelvic limb laterally, extend hip
External obturator
O: ventral surface of pubis and ischium
I: trochanteric fossa of the femur
A: rotate the pelvic limb laterally
Quadriceps femoris
- rectus femoris
- vastus lateralis
- vastus intermedius
- vastus medialis
O: ilium (rectus femoris) . proximal aspect of femur
I: tibial tuberosity via patellar ligament
A: flex hip (rectus femoris). extend stifle (all heads)
iliopsoas
**formed by muscles of psoas major and iliacus
O: ventral aspect of lumbar vertebrae. cranioventral ilium
I: lesser trochanter of the femur
A: flex hip
cranial tibial
** tendon is held down by the crural extensor retinaculum
O: proximal and lateral aspect of the tibia near the extensor groove
I: proximal plantar surface of metatarsals I and II
A: flex tarsus. rotate paw laterally so plantar surface faces medially
long digital extensor
** held down by both the crural extensor retaniculum and the tarsal extensor retinaculum
O: extensor fossa of the femur
I: extensor processes of distal phalanges digits II-V
A: extend digits. flex tarsus
fibularis longus
O: lateral collateral ligament. proximal aspect of the tibia and fibula
I: tarsal bone IV - plantar aspect of proximal ends of metatarsals
A:flex tarsus. rotate paw medially so plantar surface faces laterally
gastrocnemius
**each of the two heads contains a sesamoid bone (fabellae) in their tendons of origin
O: medial and lateral supracondylar tuberosities of the femur
I: tuber calcanei
A: extend tarsus. flex stifle
superficial digital flexor
O: lateral supracondylar tuberosity of the femur
I: tuber calcanei. plantar aspect of the base of the middle phalanx of digits II-V
A: flex stifle. extend tarsus. flex digits
deep digital flexor
- lateral digital flexor
- medial digital flexor
O: proximal tibia and fibula and adjacent interosseus membrane between the two
I: plantar aspect of the base of the distal phalanx of digits I-V
A: flex digits. extend tarsus
popliteus
O: lateral condyle of femur
I: proximal and caudal aspect of the tibia
A: Flex stifle. rotate leg (crus) medially
