Rare congenital spinal malformation due to failure in the formation and fusion of vertebral body ossification nuclei, resulting in the development of only one side of the vertebral body.
- M/C cause of congenital scoliosis
- Findings: Laterally-based wedge vertebra with half a vertebral body, a single pedicle, and hemilamina.
- M/C site: Midthoracic vertebrae (especially T8)
Result from severe angulation of the spine, narrowing of the spinal canal, instability of the spine, and luxation or fracture of the vertebrae.
- Rear limb weakness/paralysis
- Urinary/faecal incontinence
- Spinal pain
- Surgical spinal cord decompression and vertebral stabilization