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Triradiate cartilage 
Summary
The triradiate cartilage (in Latin cartilago ypsiloformis) is the Y-shaped epiphyseal plate between the ilium, ischium and pubis to form the acetabulum of the os coxae.
| Triradiate cartilage | |
|---|---|
 The acetabulum | |
| TA2 | 1859 |
| Anatomical terminology [edit on Wikidata] | |
Human development edit
In children, the triradiate cartilage closes at an approximate bone age of 12 years for girls and 14 years for boys.[1]
Clinical use edit
Evaluating the position of the triradiate cartilage on an AP radiograph of the pelvis with both Perkin's line and Hilgenreiner's line can help establish a diagnosis of developmental dysplasia of the hip.