Nontraumatic Osteonecrosis of the Femoral Head: An International Evidence-Based Clinical Practice Guideline*. - Cheng, Edward Y.; Mirzaei, Alireza; Goodman, Stuart B.; Cui, Quanjun; Mont, Michael A.; Jones, Lynne C.; Sugano, Nobuhiko; Ando, Wataru; Baek, Seung-Hoon; Drescher, Wolf; Ha, Yong-Chan; Hernigou, Philippe; et al. (Journal of Bone & Joint Surgery, American Volume, 2026)