1. Section of Young Adult Hip Surgery, Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, 1611 W Harrison St, Chicago, IL, 60612, USA
2. Department of Orthopaedic Surgery, Instituto Brasil de Tecnologias da Saúde, Rio de Janeiro, RJ, Brazil, Rua Visconde de Pirajá, 407 Rio de Janeiro, RJ, 22410-003, Brazil
3. Department of Orthopaedics and Anesthesiology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, Avenida Bandeirantes, 3900 Ribeirão Preto, SP, 14049-900, Brazil
4. Department of Orthopaedic Surgery, University of Michigan, 1500 E Medical Center Drive Ann Arbor, MI, 48109, USA
5. Department of Surgery, Dalhousie University, Halifax, 6299 South St Halifax, NS, B3H 4R2, Nova Scotia, Canada
6. Hip Preservation, aylor University Medical Center, 411 N Washington Ave, Suite 7300 Dallas, TX, 75246, USA