Abstract Background Non-vascularized bone grafting (NVBG) has demonstrated to treat osteonecrosis of the femoral head (ONFH). There are a number of articles updating the use of NVBG to treat the ONFH. but the percentage of patients subsequently undergoing a total hip arthroplasty (THA) is controversial. Methods Several electronic databases. https://www.allfixelectricales.shop/product-category/french-door-closing-bar-spring/