Reliability of knee arthrometer DYNEELAX®Mihalinec, Katja (Avtor) Vauhnik, Renata (Mentor) Martinez-Cepa, Carmen B. (Komentor) Gošnak Dahmane, Raja (Recenzent) master's thesesphysiotherapyarthrometryknee laxityanterior laxityrotational laxityreliabilityIntroduction: Increased knee laxity is an important risk factor to be considered when dealing with knee ligament injuries. Both anterior and rotational laxity when increased can lead to instability and may be one of the most important factors leading to delayed return to sport activity in both amateur and professional athletes. This means that anterior laxity testing alone, which is still the most commonly used, might not be sufficient for addressing persisting functional deficits following ligament injuries, particularly when a collateral ligament injury is present. Purpose: To our knowledge, there was no device previously described in the literature that can measure laxity first in the sagittal and then in the horizontal planes within one device, without moving the leg being tested between measurements. The DYNEELAX® arthrometer can be used to measure anterior knee laxity and rotational knee laxity. The main aim of our study was to test the intra-rater of the DYNEELAX® arthrometer. Also, gender differences in laxity, menstrual cycle affection on laxity and intake of oral contraceptives in female were studied. As rotational laxity will be measured for the first time in humans, indications of normative values will also be presented. Methods: Knee anterior laxity and rotational laxity were measured with a DYNEELAX® arthrometer in 73 subjects (39 women and 34 men). An intraclass correlation coefficient was calculated to evaluate the intra-rater reliability of the DYNEELAX® arthrometer. Results: The intraclass correlation coefficients for intra-rater reliability ranged from 0.631 (95% CI: 0.47-0.75) to 0.699 (95% CI: 0.56-0.80) and from 0.916 (95% CI: 0.87-0.95) to 0.94 (95% CI: 0.91-0.96) for anterior knee laxity and rotational knee laxity, respectively. Discussion and conclusions: This is the first study to investigate the intra-rater reliability of the DYNEELAX® arthrometer in humans. The DYNEELAX® arthrometer has good to excellent intra-rater reliability for rotational knee laxity testing and moderate intra-rater reliability for anterior knee laxity testing in healthy subjects. Also, a trend towards greater rotational laxity in women has been seen. Future studies should investigate the clinical significance of anterior and rotational laxity measured with the DYNEELAX® arthrometer in patients with knee pathology, as both laxities are critical for assessing the integrity of the intra-articular structures of the knee in clinical practice.[K. Mihalinec]20242024-10-16 07:45:46Magistrsko delo/naloga164017UDK: 615.8VisID: 138782COBISS_ID: 211805187sl