Validity and accuracy of swespine data on surgery for central lumbar spinal stenosis and lumbar disc herniation: a cohort study of 796 patients
Abstract
To validate the Swedish National Spine Registry (Swespine) for diagnostic accuracy and documentation of surgical procedures for central lumbar spinal stenosis (CLSS) and lumbar disc herniation (LDH), including an analysis of preoperative magnetic resonance imaging (MRI). Additionally, this study evaluates the accuracy and completeness of perioperative data and documented complications. Of 41,312 patients registered in Swespine for CLSS or LDH between January 2017 and December 2022, 800 were randomly selected from four hospitals. The electronic patient records were used as the gold standard. Radiological criteria for CLSS and LDH were established through a review of MRI scans. The proportion of correctly classified diagnoses (PCC) was 98.5% for CLSS and 99.2% for LDH, while the PCC of the type of surgery was 99.7% and 98.5% in the CLSS and LDH cohorts, respectively. Preoperative MRI analysis showed that 94.2% of patients undergoing CLSS surgery at the narrowest spinal level were classified as Schizas C or D, with a mean cross-sectional area of 44.2 mm². In comparison, 85.0% of patients who underwent LDH surgery were classified with Pfirrman grade 3. Swespine demonstrated high accuracy and completeness in diagnosing and surgically treating CLSS and LDH patients, as corroborated by preoperative MRI assessments. Most perioperative data, including complications, demonstrated acceptable to excellent registration. Improvements are recommended in the documentation of the American…
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