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Indian Journal of Orthopaedics Surgery

Pedicle Screw Fixation and Posterolateral Fusion in Lumbar Spondylolisthesis - A Prospective Analysis

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Author Details: Sathik Babu M .B, Sriram Thanigai T

Volume : 1

Issue : 3

Online ISSN : 2395-1362

Print ISSN : 2395-1354

Article First Page : 168

Article End Page : 170


Introduction: Spondylolisthesis is defined as the anterior slippage of one vertebra on another. The commonest level involved is L5 – S1 (89%). The displacement is a result of loose posterior locking mechanism which in turn leads to instability with symptomatic thecal sac and nerve root compression. Surgical stabilization helps in preventing further neurological insult and to enhance the recovery.

Materials and Methods: This is a prospective study comprising of 20 patients with spondylolisthesis who were treated with pedicle screw-rod fixation and postero-lateral fusion with iliac bone graft during the period of Jan 2013 to Mar 2014. These patients were reviewed periodically both clinically and radiologically for a period of 6 months following operative fixation. For determining the outcome, the Japanese orthopaedic association (JOA) Scoring system was used.
Results: Patient’s perception of their quality of life improved markedly after surgery. Overall clinical result was categorized into excellent, good, fair and poor by determining final correction of slip, maintenance of correction, and the functional outcome. 10 patients (50%) had an excellent outcome. 6 patients (30%) had good result and 4 patients (20%) had fair results.
Conclusion: From our study, we conclude that pedicle screw fixation and postero-lateral fusion is an effective treatment modality in patients with spondylolisthesis and the results obtained in our study are in par with the other studies that have been conducted elsewhere.

Key-Words: Spondylolisthesis, Postero-lateral fusion, Pedicle screw fixation.