Common Physical Examination Tests for Patellofemoral Instability Demonstrate Weak Inter-Rater Reliability.

ABSTRACT:

Purpose

The purpose of this study was to assess the inter-rater reliability of 3 common physical examination assessments, the Q-angle, J-sign, and apprehension test, used to evaluate patients presenting with recurrent lateral patellofemoral instability.

Methods

A consecutive sample of 38 subjects with recurrent lateral patellofemoral instability in 2013 were included in this reliability study. Two orthopaedic surgeons performed the physical examination maneuvers blinded to each other. The physical examination tests were performed bilaterally and included the Q angle, the J-sign, and the apprehension test. To measure the inter-rater reliability, an intraclass correlation coefficient (ICC 2,κ) was used for both legs independently for Q-angle measurements. A Cohen's kappa was u

SUBMITTER: Hiemstra LA 

PROVIDER: S-EPMC8220568 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature