Advancements for an approved component positioning in hip arthroplasty with navigation technique
Total joint replacement is one of the most successful operative procedures in orthopaedics. Independently, which technique is used, we have to pay enormous attention to the correct positioning of the joint components. In order to match these demands, we transferred our imageless navigation technique, we are using since 2001 in knee arthroplasty for the use of knee navigation. While performing our micro-hip operation technique, we use the brainlab navigation equipment with richtrackers on the pelvis and the thight for a real time data acquisition without preoperative imaging technique like CT. We examined our developed new navigation technique in prospective randomized controlled trials. The placement of the components has been assessed by postoperative CT, which confirmed the accuracy of the component position. The navigation system allows us to measure leg length and offset with different head combinations, until we reach the desired free range of motion. Authors call this method «imageless – navigation – technique». The additional time for the operative procedure was approximately 10 minutes per operation. The advantage of our development is, that we achieved to get a technique which is easy to handle for the surgeon, who is concentrated on the operative procedure itself and not on the navigation system and which allows a save and an reliable procedure.
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