Acta clinica Croatica, Vol. 64. No. 2, 2025.
Original scientific paper
https://doi.org/10.20471/acc.2025.64.02.11
Repeatibility and Reliability of Knee Joint Rotational Laxity Measurements with Double Goniometry
Alan Albanese
; University of Ljubljana, Faculty of Health Sciences, Ljubljana, Slovenia
Miroljub Jakovljević
orcid.org/0000-0003-3846-1913
; University of Ljubljana, Faculty of Health Sciences, Ljubljana, Slovenia
*
* Corresponding author.
Abstract
The results of existing studies on the range of motion in the knee joint rotation are
contradictory. The best method for measuring knee rotation has not yet been found. The purpose of
this study was to investigate the repeatability and reliability of knee joint rotational laxity measurement
using two magnetic goniometers. Thirty healthy subjects (15 males and 15 females) aged between 20
and 32 years participated in the study. Internal and external rotation of the left and right knee joints
were measured with double goniometry in the sitting position with 90° flexion of the knee. There was
no statistically significant difference in measurements between first and second session. The intraclass
correlation coefficient (ICC) for repeatability ranged from 0.812 to 0.858 and for reliability from 0.655
to 0.837. Within-subject coefficient of variation was less than 10%, standard error of measurement was
between 1.4o and 2.0o, minimal detectable change was between 2.5o and 3.8o. The measured values of
internal and external rotation did not completely agree with those reported by other authors. The ICC
values indicated good to very good repeatability and reliability of the double goniometry measurement
of rotational knee laxity. Technical improvements will be required before translation into clinical practice.
Keywords
Rotational laxity; Knee joint; Double goniometry; Range of motion
Hrčak ID:
337590
URI
Publication date:
30.6.2025.
Visits: 115 *