Ala ossis ilium, also known as the iliac wing, is a term used in anatomy to describe the broad and flat extension of the ilium bone, which is one of the three parts forming the pelvic bone, along with the ischium and pubis. The iliac wing is situated on the upper and lateral portion of the pelvis, forming the largest part of the hip bone.
The ala ossis ilium extends laterally from the sacroiliac joint, where it articulates with the sacrum, to the acetabulum, which is the socket that receives the head of the femur (thigh bone), forming the hip joint. It has a concave inner surface, called the iliac fossa, which provides attachments for various muscles, such as the psoas major, iliacus, and quadratus lumborum.
The ala ossis ilium serves several functions. It provides protection for the abdominal organs, supports the weight of the upper body, and facilitates movement and stability of the hip joint. It also contributes to the attachment of various ligaments and muscles involved in hip movements and in stabilization of the pelvis.
Understanding the structure and anatomy of the ala ossis ilium is of utmost importance in areas such as orthopedics, radiology, and physical therapy, as it can play a significant role in diagnosing and treating various conditions, including fractures, dislocations, and hip joint disorders.
