Introduction
ONFH
OSTEONECROSIS OF THE FEMORAL HEAD, JOINT DISEASE
Osteonecrosis of the femoral head (ONFH) is a joint disease with high morbidity and the disability rate that affects young adults [The pedicled vascularized iliac bone graft transfer with the ascending branch of the lateral femoral artery (PVIBGT) is an important method in hip preserving [We set up a trail group (Group A) and two control groups (Groups B and C) to investigate the efficacy and safety of biodegradable magnesium screws in the treatment of ONFH with PVIBGT. Moreover, DCE-MRI, a new and effective method, was used to evaluate the blood supply of the femoral head in PVIBGT.