Memorial Hermann Memorial City Medical Center

Knee and Hip Replacement

About MIS and CAS
Advantages of Minimally Invasive Surgery (MIS) and Computer-Assisted Surgery (CAS) for Joint Replacement include:

• Less trauma to surrounding muscles, tissue and tendons
• Reduced recovery time
• Less post-operative pain
• Quicker restoration of muscle strength
• Shorter hospital stay

What is MIS?
MIS reduces pain and recovery time for patients while increasing the long-term benefits of the surgery. Memorial Hermann Memorial City Medical Center offers state-of-the-art surgical instrumentation, as well as the latest and most innovative surgical techniques to maximize the benefits of MIS.

Compared to traditional surgical techniques that require an 8- to 10-inch incision, MIS techniques require only a 3- to 4-inch incision. As a result, less damage is done to the surrounding tissue, including muscles, blood vessels, ligaments and tendons. With reduced trauma to the surrounding soft tissue, the patient experiences less bleeding and less pain. After surgery, our patients typically have a much shorter hospital stay (only two to three days), a much shorter rehabilitation period (about three to four weeks) and a much smaller scar.

MIS techniques return our patients to their original quality of life sooner. Patients can expect recovery to full function in a shorter period of time and a quicker return to work, with less pain.

To find out which surgeons use MIS techniques, click here.

What is CAS?
In CAS computers are used to maximize the benefits of the implanted joint.  Using this innovative, leading-edge equipment allows for positive outcomes previously unattainable

CAS uses computers and other instrumentation to achieve a computer-generated 3-D model of the anatomy of the joint both before and during surgery. This technique offers a degree of accuracy unattainable without the use of computers.

The computer-generated model offers valuable information about your joint, including angles, axis and distances. Using this information can ensure an anatomical and physiological alignment of the prosthetic implant with your natural body structure and function.

Simply put, CAS allows optimization of the placement of the implanted knee or hip. The results for the patient after surgery are remarkable – greater range of motion, stability and mobility, as well as less wear and tear on the implant.

CAS techniques result in shorter hospital stays and shorter recovery times. Patients can expect a shorter rehabilitation period, greater function of the joint and a quicker return to work while achieving remarkable results with an implant that will last longer.

To find out which surgeons use CAS techniques, click here.