Musculoskeletal
Lower Extremity Functional Scale (LEFS) Calculator
The LEFS is a self-report outcome measure for patients with lower extremity musculoskeletal conditions. It assesses difficulty performing 20 functional activities.
Formula
20 items rated 0-4. Maximum score: 80 (higher = better function)
Normal Range
MCID: 9 points. Score <54 = significant functional limitation
Clinical Use
Knee, hip, ankle physiotherapy, sports medicine, post-surgical rehabilitation.
Use the Calculator
Enter patient values and get instant AI-powered clinical interpretation.