Learning Objectives: 1) Evaluate the advantages of multi-detector CT in imaging of the musculoskeletal system. 2) Develop familiarity with new applications of this technology in the musculoskeletal system. 3) Examine the impact of multi-detector CT on a busy musculoskeletal imaging practice. 4) Experience some of the post-processing techniques used with large CT data sets. 5) Analyze the capabilities of multi-detector CT in studying post-surgical complicatons, especially in the presence of metal hardware.