TY - JOUR
T1 - Analysis of pulmonary function and axis rotation in adolescent and young adult idiopathic scoliosis patients treated with cotrel-dubousset instrumentation
AU - Lenke, Lawrence G.
AU - Bridwell, Keith H.
AU - Baldus, Christy
AU - Blanke, Kathy
PY - 1992/3
Y1 - 1992/3
N2 - Forty-eight patients with idiopathic scoliosis underwent posterior spinal fusion with Cotrel-Dubousset instrumentation (CDI). Each patient was given preoperative and postoperative pulmonary function tests (PFTs). Pulmonary volume improved a mean 0.40 L (16%), and pulmonary flow improved a mean 0.33 L (15%). Differences between preoperative and postoperative PFT values were shown to be statistically significant and correlated well with coronal side-bending correction. Twenty patients had preoperative and postoperative CT scans through the apical vertebra. Vertebral rotation was assessed on CT scan by the method of Aaro and Dahlborn (1,2). At the apex, the mean percentage improvements in the longitudinal axis rotation relative to the midline (16%) and to the sagittal plane (10%), the rib hump index (8%), and the kyphosis-lordosis index (0%) were minimal. Radiographically, the 66% mean improvement in apical vertebral translation was more substantial and consistent than the 10% mean improvement in apical vertebral rotation. Therefore, at the apex the CDI “derotation maneuver” may be more of a “translational maneuver.
AB - Forty-eight patients with idiopathic scoliosis underwent posterior spinal fusion with Cotrel-Dubousset instrumentation (CDI). Each patient was given preoperative and postoperative pulmonary function tests (PFTs). Pulmonary volume improved a mean 0.40 L (16%), and pulmonary flow improved a mean 0.33 L (15%). Differences between preoperative and postoperative PFT values were shown to be statistically significant and correlated well with coronal side-bending correction. Twenty patients had preoperative and postoperative CT scans through the apical vertebra. Vertebral rotation was assessed on CT scan by the method of Aaro and Dahlborn (1,2). At the apex, the mean percentage improvements in the longitudinal axis rotation relative to the midline (16%) and to the sagittal plane (10%), the rib hump index (8%), and the kyphosis-lordosis index (0%) were minimal. Radiographically, the 66% mean improvement in apical vertebral translation was more substantial and consistent than the 10% mean improvement in apical vertebral rotation. Therefore, at the apex the CDI “derotation maneuver” may be more of a “translational maneuver.
KW - Apical rotation
KW - Apical translation
KW - Pulmonary function testing
UR - http://www.scopus.com/inward/record.url?scp=0026520329&partnerID=8YFLogxK
M3 - Article
C2 - 1571613
AN - SCOPUS:0026520329
SN - 0895-0385
VL - 5
SP - 16
EP - 25
JO - Journal of Spinal Disorders
JF - Journal of Spinal Disorders
IS - 1
ER -