DePuy Orthopaedics has acquired a San Antonio, TX-based startup that stakes a claim to being the first U.S. manufacturer of Nitinol metal implants for musculoskeletal fixation. The company, BioMedical Enterprises, markets a slew of small bone fixation devices made of Nitinol that can change shape--a process that is controlled by temperature and that can provide continuous compression, which is thought to induce bone healing after fixation procedures.