Chondral Defect

• UC Davis Foot and Ankle Clinic — Sacramento, California, United States
• MedStar Georgetown University Hospital — Washington D.C., District of Columbia, United States
• Elevate Clinical Research Wichita — Wichita, Kansas, United States
• Duke Orthopaedic Surgery — Durham, North Carolina, United States

• Stanford University — Palo Alto, California, United States
• Shriner's Hospital for Children Northern California — Sacramento, California, United States
• University of California Davis Health — Sacramento, California, United States
• Ochsner Sports Medicine Institute — New Orleans, Louisiana, United States

• Royal Orthopaedic Hospital — Birmingham, United Kingdom
• Addenbrooke's Hospital — Cambridge, United Kingdom
• Chapel Allerton Orthopaedic Centre — Leeds, United Kingdom
• Trafford General Hospital — Manchester, United Kingdom

• Centre Hospitalier Universitaire Vaudois - CHUV — Lausanne, Canton of Vaud, Switzerland

• MGH, Massachusetts General Hospital — Boston, Massachusetts, United States

• Massachusetts General Hospital — Boston, Massachusetts, United States

• University Medical Center Utrecht — Utrecht, Netherlands

• Hôpital Fribourgeois- HFR — Fribourg, Canton of Fribourg, Switzerland
• Centre Hospitalier Universitaire Vaudois - CHUV — Lausanne, Canton of Vaud, Switzerland

Not specified

• eMKa MED Medical Center — Wroclaw, Dolnośląsk, Poland