Frank A Ennis, MD

Frank Ennis, MD, specializes in hip and knee replacement, knee arthroscopy, complex revision arthroplasty of the hip and knee, and treatment of complications from hip fractures. He is fellowship-trained in adult reconstructive surgery. Dr. Ennis is a staff orthopedic surgeon at Greenwich Hospital and was among the first orthopedic surgeons in the New York Metropolitan area to do computer-assisted surgery for total knee replacement. This cutting edge technique uses computerized navigation to guide the surgeon for improved accuracy in joint replacement surgery.

After completing undergraduate studies at Yale University and post-baccalaureate pre-medical studies at Harvard University, Dr. Ennis graduated from Duke University School of Medicine and completed his residency at Yale University Department of Orthopaedic Surgery. Additionally, Dr. Ennis completed Fellowship training in adult reconstructive surgery at New England Baptist Hospital in Boston, MA.

Computer-assisted surgery is the newest generation of technology in joint replacement. Surgeons create a visual map of the knee using a highly-precise image guidance system that allows the surgeon to see beyond the ability of the naked eye. With infrared cameras and digitized images, every aspect of the operation is tracked by computer including instrumentation and positioning of the implant. More precise alignment of the implant leads to better range of motion and long-term results.

• American Academy of Orthopaedic Surgeons
• American Association of Hip and Knee Surgeons
• Connecticut Orthopaedic Society
• Yale Orthopaedic Association
• American Board of Orthopaedic Surgery

• Castle Connolly Top Doctors in NY Metro Area,  2013–2023
• Connecticut Magazine Best Doctors 2020, 2022
• Greenwich Magazine Top Doctors in Fairfield Country, 2013–2022
• Stamford Magazine Top Doctors in Fairfield County,  2013–2022
• New Canaan/ Darien Magazine Top Doctors in Fairfield County, 2013–2022
• Westport Magazine Top Doctors in Fairfield County, 2013–2022