Comparison of Long-term Outcomes between Nonoperative Treatment and Vascularized Bone Graft for Kienböck Disease: A Systematic Review and Single-Arm Meta-Analysis.

The VBG group showed greater improvement in the radiographic stage and wrist pain than did the nonoperative treatment group after treatment, but meaningful differences in parameters were not observed. Further well-designed studies are needed to confirm the superiority of VBG to nonoperative treatment regarding radiographic and clinical outcomes.