Publisher DOI: | 10.3390/jfmk3010018 | Title: | The effects of body position on pelvic tilt angles measured with a smartphone-based navigated ultrasound system in symptom-free young adults | Language: | English | Authors: | Marques, Carlos J. Martin, Tobias Fiedler, Franziska Weber, Mathias Lampe, Frank Breul, Viktor Kozak, Josef |
Keywords: | Anterior pelvic plane; Computer assisted orthopedic surgery; Pelvic tilt; Total hip replacement; Ultrasonography | Issue Date: | 20-Mar-2018 | Publisher: | MDPI | Journal or Series Name: | Journal of functional morphology and kinesiology | Volume: | 3 | Issue: | 1 | Abstract: | The study aimed to investigate whether pelvic tilt (PT) angles differ between the supine and upright position in symptom-free young adults. Additionally, the concurrent validity of the measurement system was tested on a pelvis phantom against a digital inclinometer. A new smartphone-based navigated ultrasound system was used to perform the measurements. The sample consisted of 12 symptom-free young adults. A multivariate regression model was used to analyze the data. The subjects’ pelvis in supine position was significantly more tilted anteriorly (mean PT = −7.3°, 95% C.I.: −10.6 to −3.9) than in upright position (mean PT = 0.8°, 95% C.I.: −2.5 to 4.1) (mean. diff. 8.1°; p < 0.001). Rater and trial order had no significant effects on the measured PT angles (p = 0.5). The accuracy of the system when measuring PT angles on the pelvis phantom was 0.3° (0.1° to 0.7°) and 0.2° (−0.09° to 0.6°) for the supine and upright positions respectively. Pelvic tilt angles differed significantly between the supine and the upright position in symptom-free young adults. Concurrent validity showed no differences for measurements in the upright position and small (under 0.4°) significant differences for measurements in the supine position. |
URI: | http://hdl.handle.net/20.500.12738/14428 | ISSN: | 2411-5142 | Review status: | This version was peer reviewed (peer review) | Institute: | Department Medizintechnik Fakultät Life Sciences |
Type: | Article | Additional note: | article number: 18 |
Appears in Collections: | Publications without full text |
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