P0891 Patients Undergoing Primary Hip Arthroscopy with Previous Lumbar Spine Surgery Achieve Favorable Mid-Term Results

P0892 Hip Cartilage Defects in Elite Athletes: Association with Specific Sports and 'At-Risk' Motions

P0893 Viability and Expression of Chondrocytes Harvested during Arthroscopic Treatment of Femoroacetabular Impingement

P0894 Subchondral Bone Mismatches in Osteochondral Allograft Transplants for Large Oval Defects of the Medial Femoral Condyle: Comparison of Lateral vs. Medial Femoral Condyle Donors

P0895 Does Running Increase the Risk for Hip and Knee Arthritis?: A Survey of 3,804 Chicago Marathon Runners