[Clinical study of a new biodegradable magnesium internal fixation screw in treatment of osteonecrosis of the femoral head]. - Cheng Q; Shan C; Pu L; Xu Y (Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery, 2022)