This podcast covers the JBJS issue for April 2011. Featured are articles covering: Risk Factors for Chondrolysis of the Glenohumeral Joint; recorded commentary by Dr. Levine; Instability Dependency of Osteoarthritis Development in a Rabbit Model of Graded Anterior Cruciate Ligament Transection; Results of the ProDisc-L Randomized Controlled Trial for Two-Level Degenerative Disc Disease; recorded commentary by Dr. Schoenfeld; Male and Non-English-Speaking Patients with Fracture Have Poorer Knowledge of Osteoporosis.