This technology provides your surgeon with a personalised surgical plan optimised for your unique anatomy, and then ensures the surgeon executes the operation perfectly. First, a CT scan of the diseased joint is undertaken, which is uploaded into the Mako System software, where a 3D model of your hip or knee is created. This 3D model is used to pre-plan your operation and then assist your surgeon in performing your joint replacement.
This kind of technology has been partly used for some years to help plan where to place a prosthesis, however this has only been previously based on the patient’s anatomy present. The new Mako technology now allows your surgeon to further refine the position of the prosthesis, based on the unique way that your joints move.
In the operating theatre, your surgeon takes your personalised surgical plan and moves your joint through a full range of motion all the while capturing more data regarding joint motion and tensions in the soft tissues such as ligaments. This allows the surgeon to take into account the complex interaction of the shapes of the joint surfaces on the bones and ligaments and adjust the position of the new joint accordingly. Having established what they consider to be the best position for the prosthesis the surgeon guides the robotic-arm within the predetermined areas of the joint where the machine only allows bone cutting where planned, and only in safe zones, to accept the new replacement in a perfectly placed position. In laboratory and clinical studies, Mako Technology demonstrated very accurate placement of implants, in the hip and knee, according to a pre-operative and intra-operative personalised surgical plan. This study also showed that Mako Total Knee replacement demonstrated soft tissue protection to the ligaments around the knee since much less retraction (pulling) on the soft tissues is needed to expose the joint to the surgeon, and the burr or saw on the robotic arm simply switches off if anywhere apart from the correct position- it cannot be used to cut in the wrong or a dangerous position.