Hip and Pelvis Institute

Providence Saint John’s Health Center is home to the renowned Hip and Pelvis Institute, led by medical director Joel Matta, M.D. who has pioneered the anterior approach for hip replacement in the U.S. and Andrew Yun, M.D. medical director for total joint replacement.

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A pioneer in anterior approach hip replacement

Dr. Matta’s leadership to advance the anterior approach for hip replacement includes designing the first surgeon’s course in 2003 and continuous peer-to-peer education throughout the U.S. and internationally. He is a co-designer and collaborator in the advancement of techniques that improve the safety and effectiveness of the anterior approach through the design of the hana® table, surgical instruments and imaging software.

Dr. Andrew Yun is also as specialist in anterior hip replacement. He is a fellowship trained joint replacement specialist and medical director of the joint replacement program at Saint John’s. Dr. Yun graduated from Princeton University and receive his medical doctorate at Stanford University. His surgical training was completed at Harvard.

The Institute and affiliated surgeons perform more than 1,000 hip replacements every year and continue to be recognized locally, nationally and internationally as pioneers for hip replacement and for their work with patients who suffer pelvic fractures. The Institute is dedicated to scientific advancement in all areas of hip replacement surgery.

The surgeons at the Hip and Pelvis Institute use the anterior approach for most hip replacement cases for a few key reasons:

  1. Preservation of the muscle attachment
  2. More accurate positioning of the hip in the socket
  3. More accurate leg length
  4. Less pain and a quicker recovery – leading to less time in the hospital

Leading-edge technology for better outcomes

Advanced technology plays an important role at Providence Saint John’s. A uniquely-designed surgical table is used to optimize the anterior approach. The hana® table allows the physician to place the patient into the correct supine position and lift the femur safely into position. The table provides for the safe hyperextension, adduction and external rotation of the leg. Additionally, an Image Intensifier is used to provide real-time low dose x-ray images during the surgery which are entered into a Radlink computer program. The computer generated graphic image is superimposed onto the patient allowing the physician to guide placement and ensure the leg length is accurate before the surgery is completed, which will further reduce the risk of future dislocation problems.

Natural-feeling results

Dr. Matta shares that patients receiving treatment from Providence Saint John’s Hip and Pelvis Institute say, “It feels like my own hip!” In Dr. Matta’s 30 years of experience, he believes that using the anterior approach allows the restoration of the hip’s bio mechanics and the anatomical relationship is more perfectly restored. Patients are encouraged to ask their surgeon to be specific about which surgical approach they plan to use and become educated about the benefits of each approach. A true anterior approach to hip replacement means the patient is supine (flat on their back). Using a hana table to correctly position the patient will maximize safety and effectiveness in an anterior approach


Conservative surgical treatment – including hip preserving procedures include:

Hip replacement:

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