Steadman-Hawkins fellowship-trained orthopedic surgeon Dr. Scott A. Hacker, MD delivers knee and shoulder arthroscopy, sports medicine, and robotic joint replacement on La Mesa's Grossmont Center campus. Over 6,000 orthopedic procedures — including MAKO robotic-assisted total and partial knee replacements — have been completed at Sharp Grossmont, Alvarado, and Sharp Coronado hospitals, with post-surgical rehabilitation managed through campus providers like PRN Physical Therapy. A UC Irvine School of Medicine graduate with a UCSD bioengineering master's degree (Magna Cum Laude) specializing in meniscus and cartilage biomechanics, the surgeon is board-certified by the American Board of Orthopaedic Surgery and serves as Chief of Orthopedic Surgery at Alvarado Hospital. The practice's conservative-care pipeline includes platelet-rich plasma injection and ultrasound-guided joint injection before surgical intervention, a staged approach that parallels the non-operative musculoskeletal programs at Acru Health in La Mesa. As principal investigator for Horizon Clinical Research and current team orthopedic surgeon for the United States Olympic Team at the Chula Vista Olympic Training Center, the practice contributes to FDA-regulated cartilage-repair trials including aragonite scaffold implantation and NOVOCART 3D chondrocyte transplantation for full-thickness articular defects.