What is a 'crankshaft phenomenon, ' and when does it occur?

After scoliosis surg: In general, it means that the front of the spine bones continues to grow after the back part of the spine has been operated on (surgery) as part of the treatment for scoliosis (curvature of the spine that is excessive).

Crankshaft : www.scoliosisassociates.com/...pn=crankshaft-phenomena crankshaft phenomena . Crankshaft phenomenon occurs when the front part (anterior) of the spine is fused from the back (posterior) and the spine twists as it grows.