Free online Knee Society Score calculator

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Knee Society Score calculator

About the score:

Originally published in 1989 in Clinical Orthopaedics and Related Research, the Knee Society Clinical Rating System (KSS) was designed to provide a simple and objective scoring system to rate the knee and patient’s functional abilities before and after total knee arthroplasty.

The original KSS has a “Knee Score” section (7 items) and a “Functional Score” section (3 items). Both sections are scored from 0 to 100 with lower scores being indicative of worse knee conditions and higher scores being indicative of better knee conditions.

Original Literature:

Insall, John N., et al. “Rationale of the Knee Society clinical rating system.” Clin Orthop relat res 248.248 (1989): 13-14.

Validation Literature:

Lingard, Elizabeth A., et al. “Validity and Responsiveness of the Knee Society Clinical Rating System in Comparisonwith the SF-36 and WOMAC.” JBJS 83.12 (2001): 1856-1864.

Additional Literature:

Odum, Susan M., and Thomas K. Fehring. “Can Original Knee Society Scores Be Used to Estimate New 2011 Knee Society Scores?.” Clinical Orthopaedics and Related Research®475.1 (2017): 160-167.

About the score developer:

Dr. W. Norman Scott is a Clinical Professor of Orthopaedic Surgery at NYU Langone Medical Center and Joan C. Edwards School of Medicine, Marshall University. He is a founder and the Senior Director of the Insall Scott Kelly Institute for Orthopaedics and Sports Medicine.

To view his publications, please visit PubMed.