Robotic hip replacement surgery involves the use of computer assistance to plan and execute hip replacement surgery with the utmost precision and accuracy. Dr Gomez still performs all aspects of the surgery such as the incision, surgical approach and wound closure. The mako robotic arm, which is controlled and operated by Dr Gomez at all times, is used for assistance during bone preparation and implant insertion. Dr Gomez performs all robotic THR surgery via the Anterior Minimally Invasive Surgical Approach, which allows the surgery to be performed without cutting any muscles.
The first step is patient-specific surgical planning. Before surgery, a CT scan of your hip is taken to develop a 3D virtual model of your unique joint. Dr Gomez uses this model to evaluate your bone structure, disease severity, joint alignment, leg lengths and even the surrounding bone and tissue, so he can determine the optimal size, placement and alignment of your implants.
During the surgery the computer program is used to precisely plan the level of the femoral (thigh bone) neck cut, which is important in optimal femoral prosthesis positioning and recreating leg length.
The mako robotic arm is then controlled by Dr Gomez to remove diseased bone and cartilage from the acetabulum (socket of the pelvis) using a reamer-which can best be described as a sharp, hemispherical cheese grater.
The acetabular component (cup) is then inserted using the robotic arm, which is fixed at a predetermined orientation, to ensure precision placement of the cup in exactly the position Dr Gomez requires.
A high technology plastic liner is then inserted into the metallic cup.
The femur (thigh bone) is then prepared and a trial reduction of the joint performed, utilising the predetermined parameters from the pre-operative plan.
Real time feedback is then provided to Dr Gomez regarding the cup and femoral prosthesis position as well as the leg length. Dr Gomez can then adjust any parameters, especially leg length, accordingly to ensure accurate execution of the pre operative plan, precision placement of all prosthetic components and recreation of equal leg lengths.