Surgical outcomes of Hemivertebra Resection with Mono-Segment Fusion in Children under 10 years with congenital scoliosis: a retrospective study stratified by the Crankshaft Phenomenon

The study demonstrates that single-stage posterior hemivertebra resection with mono-segment fusion is effective in correcting deformities in CEOS patients. However, the presence of the crankshaft phenomenon is associated with a poorer long-term surgical outcome, including higher rates of curve progression and worse compensatory curve management. These findings highlight the importance of identifying the crankshaft phenomenon as a potential factor influencing the prognosis of surgical correction in CEOS.