Weber, Markus and Thieme, Max and Kaiser, Moritz and Voellner, Florian and Worlicek, Michael and Craiovan, Benjamin and Grifka, Joachim and Renkawitz, Tobias (2018) Accuracy of Leg Length and Offset Restoration in Femoral Pinless Navigation Compared to Navigation Using a Fixed Pin during Total Hip Arthroplasty. BIOMED RESEARCH INTERNATIONAL: 1639840. ISSN 2314-6133, 2314-6141
Full text not available from this repository. (Request a copy)Abstract
Equalization of biomechanical differences is a major goal in total hip arthroplasty (THA). In the current study we compared the accuracy of restoring leg length and offset using imageless navigation with an osseous fixed pin to a femoral pinless device in 97 minimally invasive THAs through an anterolateral approach in the lateral decubitus position. Leg length and offset differences were evaluated onmagnification-corrected radiographs by a blinded observer. A postoperative mean difference of -0.9mm(95% CI -2.8 mm to 1.1 mm, p = 0.38) between pinless navigation and navigation with a fixed pin was observed for leg length and that of -2.4 mm(95% CI -3.9 mm to -0.9 mm, p = 0.002) was observed for offset, respectively. The number of patients with a residual difference below 5 mm after THA was higher if using a fixed pin than in pinless navigation for both leg length (98.2%, 54/55 to 50.0%, 21/42, p < 0.001) and offset (100.0%, 55/55 to 71.4%, 30/42, p < 0.001). Imageless navigation is a feasible method in intraoperative control of leg length and offset in minimally invasive THA. The use of pins fixed to the bone has a higher precision than pinless devices.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DISCREPANCY; INEQUALITY; RADIOGRAPHS; FEMUR; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Orthopädie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 Mar 2020 13:51 |
| Last Modified: | 20 Mar 2020 13:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15373 |
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