COMPUTER-ASSISTED HIP REPLACEMENT SURGERY
In this minimally invasive surgical procedure, the surgeon replaces the hip joint with the aid of a computer guidance system. The system aids the surgeon in preparing and aligning the joint with the highest degree of accuracy.
The patient is placed in a position that allows full access to the hip. The area is cleaned and sterilized, and anesthesia is administered. Tracking pins may be placed at strategic points on the patient’s skin and bones around the joint, and the computer’s imaging cameras are positioned to provide a clear view of the hip.
Visualizing The Hip
Using imagery from the infrared cameras, the computer creates a highly detailed 3D model of the hip. The surgeon studies the model to create a plan for repairing the joint. The computer helps determine the precise angle of cuts that need to be made, the size and shape of the implants needed, and the proper alignment of the implants.
Accessing The Hip
The surgeon uses specialized instruments that can be precisely tracked by the computer. A small incision is created–smaller than the incision created for traditional hip replacement–and the surgeon moves muscles aside to access the joint.
Damaged Bone Removed
After the femur is separated from the hip socket, the damaged ball is removed.
Hip Socket Cleaned
Damaged cartilage and bone are removed from the hip socket.
Metal Shell Inserted
A metal shell is pressed into the hip socket. The shell may be held in place with bone cement or screws.
A plastic, metal, or ceramic liner is locked into the metal shell, and the artificial socket is complete.
The surgeon now focuses on the femur implant. First, the end of the femur is hollowed out.
The metal implant is placed into the top of the femur. Bone cement may be used.
A metal or ceramic ball component is attached to the stem.
End Of Procedure
The new ball and socket components are joined to form the new hip joint. The surgeon tests the joint and studies the 3D model to ensure a perfect fit.
A hospital stay of four to five days is necessary, and patients will receive physical therapy. Most patients are able to bear weight on the leg a few days after the surgery.
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