Computer-assisted Hip Replacement

What is Computer-assisted Hip Replacement?

Computer-assisted hip replacement is an image-guided, minimally invasive surgical procedure to replace your diseased or damaged hip with an artificial device using the assistance of computer software. The system creates and displays images and provides information that aids your surgeon at various stages of the procedure to improve accuracy and results.

Components of the Computer-assisted System

The computer-assisted system has three basic components:

• A special navigation camera that visualizes your hip joint and creates images
• Smart instruments that can be tracked by the camera
• Computer with specialized surgical navigation software to integrate the images with surgical information

Advantages of Computer-assisted Hip Replacement

Some of the potential advantages of computer-assisted hip replacement include:

• Better accuracy in sizing and positioning of your hip implant
• Improved functional outcome and stability
• Improved durability of the implant
• Reduced risk of leg-length discrepancies
• Minimal postoperative pain

Procedure for Computer-assisted Hip Replacement

Computer-assisted hip replacement is performed in the following manner:

• Spinal anesthesia is administered
• The smart instruments are introduced into the hip and specific anatomic bony landmarks are located with the help of the camera
• This information is relayed to the computer which generates a virtual model of your hip joint and provides information to help your doctor plan and perform the surgery
• The appropriate implant size is determined and your doctor makes precise cuts in your bone to place the implant in the desired position
• The instruments are removed and the incisions are closed with sutures

Your operation may take one to one and a half hours depending on the complexity.

Post-surgery Protocol and Care

After your operation, you will be closely monitored for several hours and will remain in the hospital for a few days. Usually, you are encouraged to sit and stand a day after your surgery and will start walking with a walker and then a cane over the next few days. You may be discharged when you can ambulate well with the help of a cane and are advised about:

• Postoperative precautions
• Post-surgery exercises
• Follow-up

Recovery After Computer-assisted Hip Replacement

In about four to six weeks, you should be able to walk on your own. It may take you a few months to achieve full recovery.

Potential Complications Associated with Computer-assisted Hip Replacement

Complications of computer-assisted hip replacement are very rare (less than 1%). The pins used to attach the smart instruments to the bones in the hip can occasionally undergo fracture or cause infection. Other complications include:

• Dislocations (rarely)
• Nerve or vascular damage
• Clot formation