Abstract
Objective: The purpose of this study is to determine the accuracy of the push-pull radiographs in predicting the surgical correction in neuromuscular scoliosis.
Study Design: Retrospective radiographic review.
Subjects: Radiographs of 26 patients with neuromuscular scoliosis secondary to Duchennes Muscular Dystrophy were reviewed. All the patients had a posterior instrumented correction of the deformity by the same surgeon with the Universal Spinal System. Duchennes Muscular Dystrophy was chosen as a model for neuromuscular scoliosis since it represents a homogenous group with regards to the spinal deformity.
Outcome measures: The Cobb angle, the translation of the apex of the deformity from the central sacral line, pelvic tilt and the number of motion segments in the curve were compared between pre-operative erect, push-pull view and the post-operative radiographs. Results were analysed using student’s t test for significance and Pearson’s coefficient for correlation with the SPSS software.
Results: A correlation was seen in the form of an improvement in the Cobb angle, pelvic tilt and the apical translation when comparing the push-pull views and the post-operative radiographs. The improvement was statistically significant.
Conclusion: The push-pull view provides an adequate assessment of the fl exibility that guides a safe deformity correction.
The abstracts were prepared by Mr Peter Millner. Correspondence should be addressed to Peter Millner, Consultant Spinal Surgeon, Orthopaedic Surgery, Chancellor Wing, Ward 28 Office Suite, St James’ University Hospital, Beckett Street, Leeds LS9 7TF.
