Diagnostic Injection Linked to Better Outcomes After Subspine Decompression

This propensity score-matched cohort study compared minimum 2-year outcomes after arthroscopic subspine decompression in patients with FAIS and type II/III AIIS morphology, diagnosed either by 3D-CT morphology alone or by 3D-CT plus a positive ultrasound-guided diagnostic injection. The study reported that both groups improved significantly, but the injection group had significantly better scores on multiple patient-reported outcome measures and higher rates of achieving PASS and SCB across all measures, with similar revision and complication rates between groups. The authors state this suggests injection-confirmed subspine impingement syndrome may improve patient selection for subspine decompression.

Most relevant for: Patients being evaluated for arthroscopic hip surgery for femoroacetabular impingement syndrome with suspected concomitant subspine impingement syndrome.

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