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Background  Contradictory opinions about whether early correction and fusion surgeries should be performed for congenital scoliosis (CS) patients at a young age exist. The objectives of this study were to analyze the association between patient characteristics and fusion-surgery outcomes in CS patients treated with spinal correction and fusion surgeries and to report risk factors for extended length of stay (LOS), more estimated blood loss (EBL), longer fused segments and higher medical costs.    Methods  We analyzed data of 1,207 CS inpatients treated with fusion surgeries in our institute from January 2010 - December 2019. All patients underwent spinal X-ray, CT, MRI, echocardiogram and urogenital ultrasound. We analyzed demographic and clinical information and outcome measures, including LOS, EBL, fused segments and medical costs.    Results  Age at fusion (OR = 1.053;  p  < 0.001), musculoskeletal defects (OR = 1.670;  p  = 0.004) and thoracic deformity (OR = 1.519;  p  = 0.03) were risk factors for extended LOS. Age at fusion (OR = 1.117;  p  < 0.001), male sex (OR = 1.813;  p  < 0.001), mixed defects (OR = 1.662;  p  = 0.027) and failure of formation (OR = 1.718;  p  = 0.021) were risk factors for more EBL. Age at fusion (OR = 1.213;  p  < 0.001) was a risk factor for longer fused segments. Age at fusion (OR = 1.091;  p  < 0.001) and thoracic deformity (OR = 1.853;  p  = 0.004) were risk factors for higher medical costs.    Conclusions  We found that older age at fusion in CS patients is a risk factor for extended LOS, more EBL, longer fused segments and higher medical costs with the risk increasing by 5–21 % for each year of age. Other identified risk factors include thoracic deformity for extended LOS; longer fused segments, higher medical costs, and musculoskeletal defects for extended LOS; and CS type (FF and MD) and sex (male) for more EBL.

bmc musculoskeletal disorders

Older fusion-surgery age in congenital scoliosis patients is a risk factor for extended length of stay, more estimated blood loss, longer fused segments and higher medical costs: a retrospective study