APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The ischium (/ˈɪski. əm/) forms the lower and back region of the hip bone (os coxae). Left hip-joint, opened by removing the floor of the acetabulum from within the pelvis.

Detailed explanation-2: -The ischium (Latin: os ischii) is a paired bone of the pelvis that forms the lower and back part of the hip bone, as well as the posterior and inferior boundary of the obturator foramen.

Detailed explanation-3: -The ischium forms the most inferior and posterior portion of the coxal bone; It is the portion of the pelvic girdle that supports the body when seated and it is commonly known as the “sits bone”.