Espiral AtlasTriradiate cartilage of the acetabulum
cartilago triradiata
Study entry
Classification
Temporary primary cartilaginous joint (synchondrosis), which turns to bone after puberty.
Surfaces
At the bottom of the acetabulum, it joins the three bones of the child's hip bone: ilium, ischium and pubis, along a Y-shaped line.
Capsule
Hyaline cartilage; after puberty the three bones fuse and form the hip bone.
Movements
None: it serves the growth of the bone.
Blood supply
Not applicable.
Innervation
Not applicable.
Clinical
Before age 17, a fall on the feet or while sitting can fracture the acetabulum through the triradiate cartilage, separating its three parts.
Source: cap. 6, «Huesos coxales» (figs. 6-2 B e C) e cuadro clínico «Fracturas de la pelvis»