1. Department of Orthopedic Surgery, Prince Sultan Military Medical City, Riyadh, Saudi Arabia,
2. Department of Orthopedic Surgery, King Abdulaziz Medical City, Riyadh, Saudi Arabia,
3. College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia,
4. College of Medicine, King Saud University, Riyadh, Saudi Arabia,