Abstract:

Within the minimally invasive-operation techniques, small approaches are desirable in many fields of the surgery to reduce soft-tissue trauma; however, the risk exists that the surgeon will lose the general view of the topographic structures. The remedy lies in computer navigation with the OrthoPilot ®. This navigation system has already been used successfully for knee endoprosthesis. A special software was developed for use of the navigation-system, OrthoPilot®, for ACL reconstruction. This system is capable of determining the exact optimum position of tunnel replacement by computer navigation. This determination is made by a high-precisive infra-red camera and rigid bodies fixed onto the patient. The experience gained in performing 150 ACL reconstructions to date demonstrates the ease of handling, reduction in extra operation time to a minimum of 10-15 minutes, and only minimal trauma by fixing the rigid bodies. In all cases, an optimum position was documented for the tunnel replacement. Furthermore, no expensive preoperation x-rays (CT scan, nuclear spin) are needed. Use of the computer-assisted navigation system demonstrated that femoral and tibial tunnel replacement can be positioned precisely. Thus, a false position of the tunnel replacement, the main cause of' transplant-failure, can be avoided. The OrthoPilot® is an important support system for both less-experienced and experienced surgeons when performing surgical ACL revisions.

Authors:

Markus Degenhart, M.D. - Orthopedics Clinic, Schelztorklinik, Esslingen, Germany

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