The reliability and validity of the Korean version of the lower limb functional index.
Tae-Sung In, Jin-Hwa Jung, Kyoung-Sim Jung and 1 others
PMID 29410565WHAT IT FOUND
The Korean lower-limb questionnaire was stable when repeated after 7 days and related to two other questionnaires, one for lower-limb function and one for general health.
It did not show whether scores can track treatment change, so use it cautiously for progress.
Key findings
01The Korean Lower Limb Functional Index was stable when 56 outpatients with chronic lower-limb problems repeated it after 7 days.
02K-LLFI scores were closely related to Korean Lower Extremity Functional Scale scores and Short Form 36 scores.
03The study did not evaluate whether the K-LLFI can detect changes with time.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included only 56 outpatients at one orthopedic clinic, and the authors said the results cannot be generalized because of the small sample size. The study did not evaluate whether the K-LLFI can detect changes with time, so it does not show whether scores can track patient progress. Patients needed to understand written Korean and could not have cognitive disorder, neurological disease, or cardiopulmonary disease, so the findings do not apply to patients with those problems. The sample was limited to chronic lower-limb musculoskeletal problems, so acute lower-limb conditions were not represented.
The easy way to misread this
Do not conclude that the Korean LLFI is a proven outcome measure for all lower-limb patients or that it can track treatment progress. The study tested only 56 outpatients at one clinic and did not evaluate whether scores change over time.