Surgical Strategies and Challenges in Scheuermann's Kyphosis: A Comprehensive Review

Background: Scheuermann's kyphosis (SK) is characterized by anterior wedging of >5 degrees at three or more contiguous vertebrae associated with severe back pain and cosmetic disfigurement. Different surgical interventions have been applied for SK correction, but the optimal operational treatment remains controversial. Objectives: The aim of our study is to analyze all the current indications for the surgical correction of SK, as well as to describe the instrumentation methods and techniques in order to detect the ideal operational management and accompanied complications. Methods: This comprehensive review investigates the up-to-date surgical indications and approaches for SK, the current trends, and the associated postoperative functional outcomes. A detailed search of PubMed, Web of Science and Google Scholar databases in English literature was performed for articles during the last 20 years. Additional criteria were peer-reviewed original studies that provided the type of interventions for SK and the clinical outcomes. Results: Thirty studies that met our induction criteria were analyzed. The up-to-date surgical indications such as back pain, failure of conservative treatment, progression of deformity, and neurological complications were described. Anterior (AO) and posterior-only (PO), and combined anterior-posterior (AP) approaches and instrumentation techniques were outlined. The most common side effects of the above interventions were hardware failure, loss of correction and Proximal Junctional Kyphosis. Contrariwise, in PO, reduced blood loss and operational duration was noted. Conclusions: Although the published studies reported contradictory results of the effectiveness of the various techniques applied for SK treatment, the PO fusion was correlated with a decreased rate of complications that resulted in its current increase in popularity.