Clinical efficacy evaluation of pedicled vascularized iliac bone graft transfer for osteonecrosis of the femoral head: a retrospective study with DCE-MRI/CTP analysis

PVIBGT effectively improves hip function and delays femoral head collapse in ARCO II-IIIB ONFH. Combined DCE-MRI and CTP provide objective imaging evidence for postoperative revascularization assessment. No single factor independently predicted success, possibly due to limited sample size and subgroup heterogeneity. Larger, prospective multicenter studies with standardized imaging protocols and extended follow-up are warranted to confirm these findings.