P226 Modern Hip Arthroscopy for Femoroacetabular Impingement Syndrome Delays the Natural History of Osteoarthritis in a Fourth of Patients: A 12-Year Follow-Up Analysis

P227 Chondrogenic-Differentiated Adipose-Derived Mesenchymal Stem Cell Sheets Exhibit Chondroprotective Properties in a Rabbit Model of Degenerated Articular Cartilage

P228 Examining Long-Term Outcomes of High Tibial Osteotomies and Distal Femoral Osteotomies

P229 Mosaicplasty/Osteochondral Autograft Transfer Remains a Durable Solution for Symptomatic Chondral Defects of the Knee: Two to Ten-Year Follow-up Analysis

P230 Assessing Early Knee Osteoarthritis Development in Anterior Cruciate Ligament Reconstructed Individuals: A Novel Cartilage Stress Test