Intra-rater reliability of the knee arthrometer GNRB® for measuring knee anterior laxity in healthy, active subjects.

Background: Arthrometers are used to assess knee anterior laxity and to evaluate the integrity of the anterior cruciate ligament. Assessment of knee anterior laxity is crucial part of the clinical examination. The aim of this study was to investigate the intra-rater reliability of the GNRB® in healthy subjects.