Mihalinec Katja, Martinez-Cepa Carmen B, Zuil-Escobar Juan C, Kejžar Nataša, Vauhnik Renata
Department of Physiotherapy Biomechanical Laboratory, Faculty of Health Sciences, University of Ljubljana Ljubljana Slovenia.
Departamento de Fisioterapia Facultad de Medicina, Urbanización Montepríncipe, Universidad San Pablo-CEU, CEU Universities Boadilla del Monte Spain.
J Exp Orthop. 2024 Sep 30;11(3):e70026. doi: 10.1002/jeo2.70026. eCollection 2024 Jul.
The purpose of our study was to test the intra-rater and inter-rater reliability of the DYNEELAX® arthrometer in healthy subjects. Since rotational laxity will be measured for the first time in humans, indications for normative values will also be presented.
Knee anterior laxity and rotational laxity using a DYNEELAX® arthrometer were assessed in 73 subjects (39 females and 34 males). An intraclass correlation coefficient was calculated to evaluate the intra-rater and inter-rater reliability of the DYNEELAX®.
An intraclass correlation coefficient for intra-rater reliability ranges from 0.631 (95% confidence interval; [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. An intraclass correlation coefficient for inter-rater reliability ranges from 0.578 (95% CI: 0.40-0.71) to 0.646 (95% CI: 0.44-0.78) and from 0.822 (95% CI: 0.57-0.91) to 0.933 (95% CI: 0.89-0.96) for anterior knee laxity and rotational knee laxity, respectively.
The DYNEELAX® arthrometer has good to excellent intra-rater and inter-rater reliability for rotational knee laxity and moderate intra-rater reliability for anterior knee laxity in healthy subjects. 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.
Level IV.
本研究旨在测试DYNEELAX®关节测量仪在健康受试者中的评分者内信度和评分者间信度。由于将首次在人体中测量旋转松弛度，因此还将给出正常值的指征。
使用DYNEELAX®关节测量仪对73名受试者（39名女性和34名男性）的膝关节前向松弛度和旋转松弛度进行评估。计算组内相关系数以评估DYNEELAX®的评分者内信度和评分者间信度。
评分者内信度的组内相关系数，膝关节前向松弛度范围为0.631（95%置信区间[CI]：0.47 - 0.75）至0.699（95%CI：0.56 - 0.80），膝关节旋转松弛度分别为0.916（95%CI：0.87 - 0.95）至0.94（95%CI：0.91 - 0.96）。评分者间信度的组内相关系数范围，膝关节前向松弛度为0.578（95%CI：0.40 - 0.71）至0.646（95%CI：0.44 - 0.78），膝关节旋转松弛度分别为0.822（95%CI：0.57 - 0.91）至0.933（95%CI：0.89 - 0.96）。
DYNEELAX®关节测量仪在健康受试者中，对于膝关节旋转松弛度具有良好至极优的评分者内信度和评分者间信度，对于膝关节前向松弛度具有中等评分者内信度。未来的研究应调查使用DYNEELAX®关节测量仪测量的膝关节前向和旋转松弛度在膝关节病变患者中的临床意义，因为这两种松弛度在临床实践中对于评估膝关节关节内结构的完整性都至关重要。
四级。
