Free online Lower Extremity Function Scale (LEFS) calculator

Home / Free online Lower Extremity Function Scale (LEFS) calculator

About the score:

The Lower Extremity Function Scale (LEFS) is intended to assess functional status in patients with disability of the lower extremity (e.g., hip, thigh, knee, leg, ankle, foot). The score was originally developed in a cohort of 107 patients with lower-extremity musculoskeletal dysfunction. This cohort included a broad range of lower-extremity musculoskeletal disorders, including osteoarthritis, soft-tissue injuries (e.g., ligamentous sprain), and fracture.

The patient responds to questions that help determine the degree of difficulty the patient experiences with 20 everyday activities. A completed survey provides a holistic perspective on a patient’s lower extremity function in relation to common daily activities.

Original and Validation Literature:

Binkley, Jill M., et al. “The Lower Extremity Functional Scale (LEFS): scale development, measurement properties, and clinical application.” Physical therapy 79.4 (1999): 371-383.

Additional Literature:

Dingemans, Siem A., et al. “Normative data for the lower extremity functional scale (LEFS).” Acta orthopaedica 88.4 (2017): 422-426.

About the score developer:

The LEFS is the work of Daniel L. Riddle, Otto, D. Payton Professor in the Departments of Physical Therapy, Orthopaedic Surgery and Rheumatology at Virginia Commonwealth University. His research interests include outcomes and prognosis in musculoskeletal disorders.
To view his publications, please visit PubMed.