Renkawitz, Tobias and Schuster, Tibor and Grifka, Joachim and Kalteis, Thomas and Sendtner, Ernst (2010) Leg Length and Offset Measures with a Pinless Femoral Reference Array during THA. CLINICAL ORTHOPAEDICS AND RELATED RESEARCH, 468 (7). pp. 1862-1868. ISSN 0009-921X,
Full text not available from this repository. (Request a copy)Abstract
The bony fixation of reference marker arrays used for computer-assisted navigation during total hip arthroplasty (THA) theoretically involves the risk of fracture, infection, and/or pin loosening. We asked whether intraoperative assessment of leg length (LL) and offset (OS) changes would be accurate using a novel pinless femoral reference system in conjunction with an imageless measurement algorithm based on specific realignment of the relationship between a dynamic femoral and pelvis reference array. LL/OS measurements were recorded during THA in 17 cadaver specimen hips. Preoperatively and postoperatively, specimens were scanned using CT. Linear radiographic LL/OS changes were determined by two investigators using visible fiducial landmarks and image processing software. We found a high correlation of repeated measurements within and between (both 0.95 or greater) the two examiners who did the CT assessments. Pinless LL/OS values showed mean differences less than 1 mm and correlations when compared with CT measurements.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TOTAL HIP-ARTHROPLASTY; TOTAL KNEE ARTHROPLASTY; IMAGELESS NAVIGATION; ACCURATE; FRACTURE; SYSTEM; JOINT; DISCREPANCY; VALIDATION; INEQUALITY; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Orthopädie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Jul 2020 08:16 |
| Last Modified: | 27 Jul 2020 08:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24483 |
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