In this video we are talking about the anatomy of the pelvis of the horse and the main differences between the main domestic animals.
The ilium makes up the craniodorsal part of the hip bone. It e
The pelvis consists of two hip bones (os coxae) which is formed by the fusion of three bones: ilium, pubis and ischium.
The ilium makes up the craniodorsal part of the hip bone. It extends in a cranio-dorsal direction, from the hip joint to the articulation with the sacrum. It is made from a cranial wing and a caudal body.

Ilial Wing:
The margin of the wing is known as the iliac crest. Along the crest are two very important anatomical landmarks:
Tuber Coxae or Coxal Tuberosity forms the palpable point of the hip.
Sacral Tuber is the thickened mediodorsal angle of the ilial wing.
The lateral surface of the wing provides a point of attachment for the gluteal muscles. The medial surface has two distinct parts:
The lateroventral part provides the point of insertion for many pelvic muscles.
The mediodorsal part articulates with the sacrum forming the sacroiliac joint.
The caudodorsal border of the wing is very concave and along its surface is the greater sciatic notch. This is where the sciatic nerve runs over the ilium.
Ilial Body
The only anatomical feature of note is the psoas tubercle on the ventral border. This provides attachment for the psoas muscle.

Ischium:
The Ischium can be divided into three main sections:
The body is part of the acetabulum. The dorsal border is continuous with that of the ilium forming the ischiatic spine which tapers towards the lesser sciatic notch.
The caudal plate extends cranially into the symphysial and acetabular branches, which form the caudal borders of the obturator foramen. The caudal section is thickened creating the ischial tuberosity that is a visible landmark in most animals. The medial caudal borders meet in a concave fashion forming a broad and deep notch called the ischial arch.
The medial branch forms the caudal section of the pelvic symphysis.

Pubis
The pubis is an L shaped bone that makes up one of the three bones of the pelvis. It consists of three parts:
Body
Transerse acetabular branch the cranial edge of which is the pectin of pubis and forms the iliopubic emminence, to which some of the abdominal muscles attach.
Sagittal symphysial branch
The two pubis fuse at the cranial section of the pubic symphysis. Lying off the ventral surface of the symphysis is the ventral pubic tubercle. The pubis forms more than half the obturator foramen. This is an opening in the pelvic floor that allows the obturator nerve to pass through it. The foramen is closed by musculature and soft tissue.

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