The triradiate cartilage (in Latin cartilago ypsiloformis) is the 'Y'-shaped
epiphyseal plate
The epiphyseal plate (or 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, wit ...
between the
ilium,
ischium and
pubis to form the
acetabulum of the
os coxae
The hip bone (os coxae, innominate bone, pelvic bone or coxal bone) is a large flat bone, constricted in the center and expanded above and below. In some vertebrates (including humans before puberty) it is composed of three parts: the ilium, ischi ...
.
Human development
In children, the triradiate cartilage closes at an approximate
bone age Bone age is the degree of a person's skeletal development. In children, bone age serves as a measure of physiological maturity and aids in the diagnosis of growth abnormalities, endocrine disorders, and other medical conditions. As a person grows fr ...
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 radiography ("diagnostic" and "therapeut ...
of the
pelvis 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