Clinical outcomes of diffuse PVNS of the knee following arthroscopic complete synovectomy±posterior open resection.

Introduction This study compares recurrence rates and functional outcomes of patients who underwent anterior arthroscopic synovectomy versus combined anterior arthroscopic/posterior open synovectomy for diffuse pigmented villonodular synovitis (DPVNS). Methods 41 patients were grouped by initial procedure and tracked for disease recurrence and functional outcomes (Lysholm Scale). Results 24 patients (58.5%) had disease recurrence [16 (57.1%) arthroscopic, 8 (61.5%) combined, chi-square test p = 0.81]. The combined procedure mean Lysholm Score (75.4) exceeded the arthroscopic (68.1) (two-sample t-test p = 0.25). Conclusions There is no statistical evidence that the combined procedure harms functionality more than arthroscopic only or that recurrence rates differ between treatment methods.