The triradiate cartilage (in Latin cartilago ypsiloformis) is the Y-shaped
epiphyseal plate
The epiphyseal plate, epiphysial plate, physis, or growth plate is a hyaline cartilage plate in the metaphysis at each end of a long bone. It is the part of a long bone where new bone growth takes place; that is, the whole bone is alive, with ma ...
between the
ilium,
and
pubis to form the
acetabulum
The acetabulum (; : acetabula), also called the cotyloid cavity, is a wikt:concave, concave surface of the pelvis. The femur head, head of the femur meets with the pelvis at the acetabulum, forming the Hip#Articulation, hip joint.
Structure
The ...
of the
os coxae.
Human development
In children, the triradiate cartilage closes at an approximate
bone age of 12 years for girls and 14 years for boys.
Clinical use
Evaluating the position of the triradiate cartilage on an
AP radiograph
Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object. Applications of radiography include medical ("diagnostic" radiography and "therapeu ...
of the
pelvis
The pelvis (: pelves or pelvises) is the lower part of an Anatomy, anatomical Trunk (anatomy), trunk, between the human abdomen, abdomen and the thighs (sometimes also called pelvic region), together with its embedded skeleton (sometimes also c ...
with both
Perkin's line and
Hilgenreiner's line can help establish a diagnosis of
developmental dysplasia of the hip.
References
See also
{{Pelvis
Pelvis