triradiate cartilage

triradiate cartilage

a secondary ossification center of the hip bone, occurring as a Y-shaped strip in the floor of the acetabulum.
References in periodicals archive ?
1) A curvilinear osteotomy done along the superior margin of acetabulum, ending just short of the iliopubic limb of triradiate cartilage.
CONCLUSSION: Triradiate cartilage if used as a hinge instead of pubic symphysis yields greater degree of acetabular correction with good stability and excellent functional outcome.
Also, AP radiographs of the hips showed the characteristic long bone metaphyses and epiphyses irregularity as well as widening of the triradiate cartilage of the pelvis, poorly formed acetabulae, and femoral neck beaking (Figure 2).
The acetabulum is usually poorly formed and reveals a widened triradiate cartilage (Figure 2).
The enlargement of the triradiate cartilage and the poorly formed acetabulae are not seen in this disorder.
Eppinger, in 1903, reporting on four similar pelvic specimens, suggested that the deformity resulted from a disturbance of growth affecting the delayed ossification of the triradiate cartilage.
A disturbance of growth may lead to a delay in ossification of the triradiate cartilage.
The converse of this might be the case: abnormal acceleration of epiphyseal ossification in the pelvis replacing the triradiate cartilage with new, vascular and plastic bone that allows molding under weight bearing.
He described a "beaking" of the triradiate cartilage which is at a maximum at eight years of age and which subsequently remodels.
Experiments on rabbits have shown, however, that premature surgical fusion of the triradiate cartilage leads to a thick medial acetabular wall with progression to subluxation of the hip.
In skeletally immature patients, surgical fusion of the triradiate cartilage has been proposed.
Patients with more growth potential are at higher risk of quick progression, including children at a Tanner stage less than 3, those who are premenarche, and children with open triradiate cartilages.