Pelvic limb Myology

Tensor fascia latae m. origin

tuber coxae

Tensor fascia latae m. insertion

fascia lata

Tensor fascia latae m. action

flex coxal joint; tense the fascia lata and aid in extension of the genual joint

Superficial gluteal m. origin

sacrum and sacrotuberous ligament

superficial gluteal m. insertion

third trochanter of femur

superficial gluteal m. action

extend the coxal joint and abduct the limb

middle gluteal m. origin

gluteal surface of ilium

middle gluteal m. insertion

greater trochanter of femur

middle gluteal m. action

extend coxal joint (principal); rotate the limb medially

Piriformis m. origin

sacrum and first caudal vertebra

Piriformis m. insertion

greater trochanter

Piriformis m. action

extend the coxal joint (principal); rotate the limb medially

Deep gluteal m. origin

body of ilium and ischiatic spine

Deep gluteal m. insertion

greater trochanter

deep gluteal m. action

extend the coxal joint (principal); rotate the limb medially

Biceps femoris m. origin

ischiatic tuberosity and sacrotuberous ligament

biceps femoris m. insertion

patella, cranial tibia and tuber calcanei

biceps femoris m. action

extend the coxal and tarsal joints; abduct the limb

Semitendonosus m. origin

ischiatic tuberosity

Semitendinosus m. insertion

prximal tibia and tuber calcanei

Semitendinosus m. action

extend coxal and tarsal joints; variable action on genual joint

Sartorius m. origin

ilium

Sartorius m. insertion

patella and cranial tibia

Sartorius m. action

flex the coxal joint and variable action on the genual joint

Gracilis m. origin

pelvic symphysis

Gracilis m. insertion

cranial tibia and tuber calcanei

Gracilis m. action

adduct the limb (principal); extend coxal and tarsal joints; flex the genual joint

Pectineus m. origin

iliopubic eminence

Pectineus m. insertion

distal body of femur

Pectineus m. action

adduct the limb

Adductor m. origin

ventral surface of os coxa

Adductor m. insertion

caudal surface of femur

Adductor m. Action

adduct the limb (principal); exted the coxal joint