Changes

The inner pelvic muscles are small and lie close to the coxofemoral (hip) joint.  They run between the pelvis and trochanteric fossa of the femur.

The inner pelvic muscles are small and lie close to the [[Joints and Ligaments - Horse Anatomy#Coxafemoral/Hip Joint|coxafemoral (hip) joint]].  They run between the pelvis and trochanteric fossa of the [[Bones and Cartilages - Horse Anatomy#Femur|femur]].

'''''Internal Obturator'''''

'''''Internal Obturator'''''

:'''Origin''':  

:'''Origin''':  

::Pubic head - Cranial and medial borders of the obturator foramen

::Pubic head - Cranial and medial borders of the obturator foramen

::Pelvic head - Pelvic symphysis and pelvic aspect of the body of the ilium

::Pelvic head - Pelvic symphysis and pelvic aspect of the body of the [[Hindlimb - Anatomy & Physiology#Ilium|ilium]]

:'''Insertion''': Trochanteric fossa together with the ''gemellus'' muscle, having passed over the lesser sciatic notch

:'''Insertion''': Trochanteric fossa together with the ''gemellus'' muscle, having passed over the lesser sciatic notch

:'''Action''': Rotates the femur laterally, aids hip extension

:'''Action''': Rotates the femur laterally, aids [[Joints and Ligaments - Horse Anatomy#Coxafemoral/Hip Joint|hip]] extension

'''''External Obturator'''''

'''''External Obturator'''''

:'''Innervation''': Obturator n.

:'''Innervation''': Obturator n.

:'''Origin''': Vental surface of pelvis, close to the obturator foramen

:'''Origin''': Ventral surface of pelvis, close to the obturator foramen

:'''Insertion''': Trochanteric fossa

:'''Insertion''': Trochanteric fossa

:'''Action''': Supinates the femur and adducts the limb

:'''Action''': Supinates the [[Bones and Cartilages - Horse Anatomy#Femur|femur]] and adducts the limb

'''''Gemellus'''''

'''''Gemellus'''''

: In the horse, these two small muscle bundles are fused and unite partly with the ''internal obturator'' muscle

: In the horse, these two small muscle bundles are fused and unite partly with the ''internal obturator'' muscle

:'''Innervation''': Sciatic n.

:'''Innervation''': Sciatic n.

:'''Origin''': Ischium

:'''Origin''': [[Hindlimb - Anatomy & Physiology#Ischium|Ischium]]

:'''Insertion''': Trochanteric fossa

:'''Insertion''': Trochanteric fossa

:'''Action''': Aids lateral rotation of the limb

:'''Action''': Aids lateral rotation of the limb