Extended Version of a Test Battery for Visual Assessment of Postural Orientation Errors: Face Validity, Internal Consistency, and Reliability.

The study only looked at patients in the late phase of rehabilitation who could already jump. It is unknown if this test battery works for patients earlier in their recovery or those who cannot jump. The assessment was done from a 2D video perspective. This might not capture the true 3D movement of the knee, which could involve hip rotation. The researchers did not check if a single rater would give the same score if they watched the video twice on different days (intrarater reliability was not evaluated). The study population was homogeneous (only ACLR patients), so the results cannot be generalized to other knee injuries or lower-limb conditions. The test battery has not yet been proven to predict re-injury or to be sensitive to changes in a patient's condition over time (responsiveness).

The study was funded by a grant from the Skåne Regional Council and Lund University. The funder played no role in the design, conduct, or reporting of the study.

Do not assume this test battery predicts re-injury risk or tracks progress over time. The study only checked if the visual scores were consistent and reliable among raters; it did not prove that these errors cause new injuries or improve with specific treatment.