Total hip replacement (THR) and is considered for painful osteoarthritis of the hip when non-operative treatment fails to control the patient’s symptoms. Hip replacement surgery involves resurfacing the damaged arthritic surfaces with implants typically made of metal alloys and strong plastic (polyethylene).
The hip is a ball and socket joint. The socket (acetabulum) is replaced with a metal cup. The polyethylene is inserted into the metal cup to allow for a smooth gliding surface. The ball is replaced with a metal stem inserted into the femoral canal (thigh bone). A metal or ceramic ball is attached to the stem.
Robotic-assisted THR provides a precise customized plan based on a preoperative CT scan. The CT scan is combined with real time navigation of the patient’s specific bone anatomy during surgery to provide accurate and consistent implant size and position. Ideal implant size and position leads to better function and longer lasting joint replacement.
The robotic arm is controlled by the surgeon and works in a predefined area based on the patient’s personalized pre-operative plan. If the robotic arm strays, it stops working, protecting surrounding tissues. Fine-tuned adjustments can be made during surgery based on real-time feedback provided by the computer navigation screens.
Robotic-assisted THR is believed to provide improved precision of implant position and size leading to better function and longevity of the hip replacement.