Triradiate cartilage

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
*Anatomical terminology*

Human development

In children, the triradiate cartilage closes at an approximate bone age of 12 years for girls and 14 years for boys.[1]

Clinical use

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.

References

Dimeglio, A (2001). "Growth in Pediatric Orthopaedics". J Pediatr Orthop. 21 (4): 549–555. PMID 11433174.

See also

Bones of the pelvis

General

arcuate line

gluteal lines	posterior anterior inferior
iliac spines	anterior superior anterior inferior posterior superior posterior inferior
other:	crest tuberosity tubercle fossa

body	ischial spine lesser sciatic notch
superior ramus	tuberosity of the ischium
inferior ramus	no substructures

body
- pubic crest
superior ramus
- pubic tubercle
- obturator crest
inferior ramus
- pectineal line

Compound

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