Physical functions assessed by lower limb performance-based and self-reported outcome measures for knee musculoskeletal conditions: A scoping review.

The review did not assess the psychometric quality (validity, reliability) of the identified measures, only the content they covered. Only English-language studies and peer-reviewed literature were included, potentially missing relevant measures from other languages or grey literature. Data extraction was performed by a single primary investigator, which introduces a risk of minor errors, although this was reviewed by the wider team. The findings apply only to knee OA, ACL injury, and PFP, and may not generalize to other knee conditions like meniscal tears or post-surgical recovery.

The authors declare that they have no known personal relationships that could have appeared to influence the work reported in this paper.

Do not assume that a single performance-based test gives you a complete picture of a patient's physical function. Most PBOMs assess only one specific activity, so a high score on a jumping test for an ACL patient does not mean they can climb stairs or stand up from a chair safely. Similarly, do not treat self-reported scores as precise measures of specific physical capabilities, as the questions often combine multiple activities into vague items.