Unger Lectures and Presentations Anterior Hip Replacement Seminar The Direct Anterior Hip Replacement Current Status of Total Hip Surgery: What is New? DAA-THA: No Technology Needed Cementless TKA DAA-Does it Make a Difference? Present Status of Unicondylar Knee Arthroplasty 2007 Why the Direct Anterior Approach for THA AAOS Guidelines Infection Work-Up