PURPOSE: To investigate which pre- and postoperative radiographic parameters are significantly correlated with the immediate postoperative coronal balance (CB) in Lenke 5C AIS patients, and to identify any radiographic parameter that is correlated with the ultimate CB at a minimum follow-up of 2 years. METHODS: Forty Lenke 5C AIS patients were recruited in the current study. Preoperative, immediate postoperative, and the latest follow-up radiographs were reviewed measuring various radiographic parameters related to UIV and LIV. The correlations between different parameters and CB were then studied. RESULTS: The average follow-up time was 35.2 months. Correlation analysis showed that the following radiographic parameters significantly associated with the immediate postoperative CB in Lenke 5C patients: preoperative CB (r = 0.66, p < 0.01), preoperative UIV translation (r = 0.61, p < 0.01), preoperative LIV tilt (r = 0.61, p < 0.01), postoperative UIV translation (r = 0.51, p < 0.05), and postoperative LIV tilt (r = 0.50, p < 0.05). At the last follow-up, only the final UIV tilt was inversely correlated with the ultimate CB (r = -0.58, p < 0.05). Seven patients presented with coronal imbalance immediately after surgery. However, only one of the seven patients presented with coronal imbalance at the last follow-up, and the other six achieved C7PL-CSVL distance within 10 mm. CONCLUSIONS: In Lenke 5C patients, preoperative UIV translation and LIV tilt are two important parameters that can predict the immediate postoperative CB. During the postoperative follow-up, UIV tilt may play a very important role in compensating for postoperative coronal imbalance.
PURPOSE: To investigate which pre- and postoperative radiographic parameters are significantly correlated with the immediate postoperative coronal balance (CB) in Lenke 5C AISpatients, and to identify any radiographic parameter that is correlated with the ultimate CB at a minimum follow-up of 2 years. METHODS: Forty Lenke 5C AISpatients were recruited in the current study. Preoperative, immediate postoperative, and the latest follow-up radiographs were reviewed measuring various radiographic parameters related to UIV and LIV. The correlations between different parameters and CB were then studied. RESULTS: The average follow-up time was 35.2 months. Correlation analysis showed that the following radiographic parameters significantly associated with the immediate postoperative CB in Lenke 5C patients: preoperative CB (r = 0.66, p < 0.01), preoperative UIV translation (r = 0.61, p < 0.01), preoperative LIV tilt (r = 0.61, p < 0.01), postoperative UIV translation (r = 0.51, p < 0.05), and postoperative LIV tilt (r = 0.50, p < 0.05). At the last follow-up, only the final UIV tilt was inversely correlated with the ultimate CB (r = -0.58, p < 0.05). Seven patients presented with coronal imbalance immediately after surgery. However, only one of the seven patients presented with coronal imbalance at the last follow-up, and the other six achieved C7PL-CSVL distance within 10 mm. CONCLUSIONS: In Lenke 5C patients, preoperative UIV translation and LIV tilt are two important parameters that can predict the immediate postoperative CB. During the postoperative follow-up, UIV tilt may play a very important role in compensating for postoperative coronal imbalance.
Authors: Ville Remes; Ilkka Helenius; Dietrich Schlenzka; Timo Yrjönen; Mauno Ylikoski; Mikko Poussa Journal: Spine (Phila Pa 1976) Date: 2004-09-15 Impact factor: 3.468
Authors: Kotaro Satake; Lawrence G Lenke; Yongjung J Kim; Keith H Bridwell; Kathy M Blanke; Brenda Sides; Karen Steger-May Journal: Spine (Phila Pa 1976) Date: 2005-02-15 Impact factor: 3.468
Authors: Matthew B Dobbs; Lawrence G Lenke; Tim Walton; Michael Peelle; Greg Della Rocca; Karen Steger-May; Keith H Bridwell Journal: Spine (Phila Pa 1976) Date: 2004-02-01 Impact factor: 3.468