Acetabulum

As the acetabulum, hip or pelvic bone the cup portion formed by the basin of the hip is referred to in the anatomy. The medical term is derived from its resemblance to a Essignäpfchen (Latin acetum " vinegar " ) on how it was to be found in ancient Rome on each panel.

Anatomy

The acetabulum is used by all three hip bones - Made - ilium ( ilium ), ischial ( ischium ) and pubis ( pubic bone ). When predators beyond even the Azetabularknochen (Os acetabular ) is involved in the formation, the end of the second month of life merges with the other shares.

The acetabulum consists of a crescent-shaped articular surface (facies semilunata ), which is divided into two parts in ruminants ( pars major and minor). The cartilage surface is in humans, only about 2 inches long and 0.3 inches thick.

In the middle of the acetabulum to hip joint pit ( acetabular fossa ) is hollowed out. In this pit springs a band ( ligamentum capitis femoris ossis ), which accommodates a thin branch of the obturator artery, the artery capitis femoris. It is involved in the arterial supply of the femur. The band itself has no mechanical function. The open side of the crescent - the man by the front bottom - is as acetabular notch ( " acetabular notch " ) and referred to by a ligament ( transverse acetabular ) closed.

The rim of the acetabulum is increased by a Knorpelsaum, the labrum ( limbus acetabuli, in animal anatomy as acetabular labrum called ), so that the head of the femur is comprised of his equator addition.

Clinic

A broken bone in the pelvic socket is called the acetabulum. Chronic changes of the acetabulum occur at the hip joint osteoarthritis. A protrusion of the acetabulum ( acetabular protrusion ) can occur hereditary or by various hip diseases.

Too shallow acetabulum is hereditary mainly found in humans ( → hip dysplasia ) and various dog breeds ( → dysplasia of the dog ).