Hemivertebra is a defect of (AIIMS May 2014)
|D||Posterior vertebral arches|
Vertebral bodies mainly develop from ventral sclerotome (VS) and thus hemivertebra is a defect of VS.
Hemivertebra can lead to defects in the vertebral column – scoliosis.
Posterior vertebral arches (PVA) contribute mainly to the lamina & spines. PVA are contributed by the dorsal sclerotome