Changes

'''''Superficial Gluteal'''''

'''''Superficial Gluteal'''''

:'''Innervation''':  

:'''Innervation''': Caudal gluteal n.

:'''Origin''': Gluteal fascia

:'''Origin''': Gluteal fascia

:'''Insertion''': Unites with the ''tensor fascia lata'', passing over the greater trochanter and attaching on the third trochanter with radiations to the femoral fascia.  A synovial bursa exists between the tendinous insertion and the third trochanter.  

:'''Insertion''': Unites with the ''tensor fascia lata'', passing over the greater trochanter and attaching on the third trochanter with radiations to the femoral fascia.  A synovial bursa exists between the tendinous insertion and the third trochanter.  

'''''Middle Gluteal'''''

'''''Middle Gluteal'''''

:The largest of the gluteals, it lies deep to the superficial gluteal and provides the visible shape of the croup. A sheet of tendon divides the muscle into a deep ('''accessory gluteal muscle''') and superficial part. It fuses caudally with the ''piriformis'' muscle.

:The largest of the gluteals, it lies deep to the superficial gluteal and provides the visible shape of the croup. A sheet of tendon divides the muscle into a deep ('''accessory gluteal muscle''') and superficial part. It fuses caudally with the ''piriformis'' muscle.

:'''Innervation''':  

:'''Innervation''': Caudal gluteal n.

:'''Origin''': 1st lumbar vertebra, aponeurosis of the ''longissimus'' muscle, sacrum, sacrotuberous ligament

:'''Origin''': 1st lumbar vertebra, aponeurosis of the ''longissimus'' muscle, sacrum, sacrotuberous ligament

:'''Insertion''':

:'''Insertion''':

::Superficial - Greater trochanter

::Superficial - Greater trochanter

:'''Action''': Poweful hip extensor, retracts and abducts the limb. Transfers the power of the hindlimb to the trunk, allowing the horse to rear up.

:'''Action''': Poweful hip extensor, retracts and abducts the limb. Transfers the power of the hindlimb to the trunk, allowing the horse to rear up.

'''''Tensor Muscle of the Fascia Lata'''''

'''''Tensor Muscle of the Fascia Lata'''''

 

The tensor muscle of the fascia lata originates from the coxal tuberosity and joins the fascia lata and so indirectly attaches to the patella, lateral pattelar ligament and cranial border of the tibia. A caudodorsal detachment joins the superficial gluteal and so attaches to the greater trochanter.  

:'''Origin''': Tuber coxae, extending distally on the cranial border of the ''quadriceps'' muscle

:'''Insertion''': Combines with the fascia lata and so indirectly attaches to the patella, lateral patellar ligament and cranial border of the tibia. A caudodorsal detachment joins the superficial gluteal and so attaches to the greater trochanter of the femur.

:'''Action''' Tenses the fascia lata, indirectly flexing the hip and extending the stifle. Advances the limb during the swing phase of the stride.  

'''''Biceps Femoris'''''

'''''Biceps Femoris'''''