Avascular Necrosis

• The first affiliated hospital of Guangzhou Tranditional Meidical University — Guangzhou, Guangdong, China
• The third affiliated hospital of Hebei University — Shijiazhuang, Hebei, China
• The second affiiliated hospital of Harbin Medical University — Harbin, Heilongjiang, China
• The first affiliated hospital of Nanchang University — Nanchang, Jiangxi, China

• Aarhus University Hospital — Aarhus, Denmark

Not specified

• Luoyang Orthopedic-Traumatological Hospital — Luoyang, Henan, China
• Inner Mongolia Bao Gang Hospital — Baotou, Inner Mongolia, China
• The First Teaching Hospital of Xinjiang Medical University — Ürümqi, Xinjiang, China
• Traditional Chinese Medicine Hospital of Xinjiang Uygur Autonomous Region — Ürümqi, Xinjiang, China

• Nanjing First Hospital — Nanjing, Jiangsu, China
• The First Hospital of Jilin University — Changchun, Jilin, China
• The First Teaching Hospital of Xinjiang Medical University — Ürümqi, Xinjiang, China
• Peking University People's Hospital — Beijing, China

• Florida Orthopedic Institute — Tampa, Florida, United States
• Indiana Hand to Shoulder Center — Indianapolis, Indiana, United States
• Massachusetts General Hospital — Boston, Massachusetts, United States
• Vanderbilt Hand Center — Nashville, Tennessee, United States

• Mark Newman, Inc. — Newport Beach, California, United States
• Charleston Orthopaedic Assoc. — Charleston, South Carolina, United States
• Advanced Orthopaedic Centers — Richmond, Virginia, United States

• University Otago, Wellington Medical School of Medicine — Wellington, New Zealand

• Low Country Bone & Joint Specialists — Beaufort, South Carolina, United States
• Piedmont Orthopedics — Greenville, South Carolina, United States
• Texas Center for Joint Replacement — Plano, Texas, United States
• Arthritis & Sports Orthopaedics — Sterling, Virginia, United States

• Physician's Clinic of Iowa, PCI — Cedar Rapids, Iowa, United States
• Lexington Clinic — Lexington, Kentucky, United States