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ASI Hip Surgery

 

New Approach to Hip Replacement
Lower dislocation rate, more precise replication of leg length, a safer procedure, and improved early recovery and return to normal activities.

 

Through the use of new equipment and technology, patients suffering from debilitating hip pain now have a new option for relief. Davis Hospital has recently purchased a Hana table which allows patients to be positioned on their back (or supine) during surgery, making it possible to replace the hip safely through a single incision. Dr. Lyman has received extensive training in the Anterior Supine Intramuscular (ASI) approach to hip replacement and is currently using this special table to improve his patients’ lives.

 

The ASI approach is unique because it is done without detachment of muscle from the pelvis or femur. The use of the Hana table allows the surgeon to place the leg in any position. By utilizing multiple positions, the components of hip replacement can be implanted through the anterior, or front, of the hip providing immediate stability of the hip after surgery and reducing the risk of hip dislocation.

 

One of the most important features of ASI is the position of the patient being supine, or lying on their back. The fact that the patient is supine makes a difference for several reasons. Most importantly, the surgical team can use live x-ray in the operating room. In addition, with the patient supine, the anesthesiologist has full access to the patient’s airway making the surgery safer.

 

What are the benefits of using live X-ray during a hip replacement?

  1. Alignment of the hip replacement is improved. Hips properly aligned do not wear out as quickly. When alignment is off, it can accelerate wear of the bearing surface. When the bearing surface begins to wear out, small particles from the hip replacement are released and the immune system gets activated. Unfortunately, the immune system not only digests these small particles, it also digests or destroys the patient’s bone. This leads to loosening of the implants and that means pain for the patient.

  2. Hips that are not aligned properly can dislocate.

  3. Using X-rays also allows the surgeon to replicate the patient’s leg length with more exactness. Leg length inequality can be bothersome to the patient.

The ASI approach is unique because it is done without detachment of muscle from the pelvis or femur. The use of the Hana table allows the surgeon to place the leg in any position. By utilizing multiple positions, the components of hip replacement can be implanted through the anterior, or front, of the hip providing immediate stability of the hip after surgery and reducing the risk of hip dislocation.

Patient on Hana Table
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