Renkawitz, Tobias and Schuster, Tibor and Herold, Thomas and Goessmann, Holger and Sendtner, Ernst and Grifka, Joachim and Kalteis, Thomas (2009) Measuring leg Length and offset with an imageless navigation system during total hip arthroplasty: is it really accurate? INTERNATIONAL JOURNAL OF MEDICAL ROBOTICS AND COMPUTER ASSISTED SURGERY, 5 (2). pp. 192-197. ISSN 1478-5951,
Full text not available from this repository. (Request a copy)Abstract
Background A novel imageless measurement algorithm to assess leg length (LL) and offset (OS) changes during total hip arthroplasty (THA) has been established, the purpose of this study was to describe the process and establish whether or not it is accurate. Methods THA was performed on 17 cadaver hip specimens. LL and OS changes were determined intra-operatively, using an imageless navigation system. Pre- and postoperatively, all specimens had a computed tomography scan (CT) and the LL and OS changes were analysed by two blinded investigators. Results With mean differences of less than 1 mm (LL, 0.74; SD, 2.4 mm; OS, 0.89; SD, 1.8 mm) supported by substantial significant correlations [r = 0.83 (LL) and r = 0.92 (OS)] imageless navigation values demonstrated a high accuracy when compared to CT measurements. Conclusions Intra-operative LL and OS measures are reliable and accurate when using an imageless calculation algorithm which stores the position of the femoral reference frame in relation to the pelvic coordinate system before and after reconstruction. Copyright (C) 2009 John Wiley & Sons, Ltd.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ABDUCTOR MUSCLE STRENGTH; FEMORAL OFFSET; PELVIC TILT; DISCREPANCY; JOINT; INEQUALITY; COMPONENT; MOTION; minimally invasive; hip arthroplasty; total joint replacement; computer-assisted surgery; total hip replacement |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Orthopädie Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Sep 2020 07:26 |
| Last Modified: | 14 Sep 2020 12:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28874 |
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