Free online Modified Cincinnati Knee Rating System calculator

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Modified Cincinnati Knee Rating System (mCKRS) Score Calculator

About the score:

The Modified Cincinnati Knee Rating System (mCKRS) was originally published in the American Journal of Sports Medicine in 1990. It is a modification of the Cincinnati Knee Rating System (CKRS) by Noyes et al. that is shorter than the original. The mCKRS study was first published in the context of patient reported outcomes following Anterior Cruciate Ligament (ACL) reconstruction. However, the mCKRS is applicable to a variety of knee conditions.

The Modified Cincinnati Knee Rating System consists of 12 questions that cover the domains of pain, swelling, function and activity-level. The total score is calculated as the sum of all questions responses, with 100 representing the best/excellent knee function, and 0 representing the worst/poor knee function.

Original Literature:

Shelbourne, K. Donald, and Paul Nitz. “Accelerated rehabilitation after anterior cruciate ligament reconstruction.” The American journal of sports medicine 18.3 (1990): 292-299.

Validation Literature:

Marx, Robert G., et al. “Reliability, validity, and responsiveness of four knee outcome scales for athletic patients.” JBJS 83.10 (2001): 1459-1469.

Additional Literature:

Noyes, Frank R., Sue D. Barber, and Lisa A. Mooar. “A rationale for assessing sports activity levels and limitations in knee disorders.” Clinical Orthopaedics and Related Research® 246 (1989): 238-249.
Barber-Westin, Sue D., Frank R. Noyes, and John W. McCloskey. “Rigorous statistical reliability, validity, and responsiveness testing of the Cincinnati knee rating system in 350 subjects with uninjured, injured, or anterior cruciate ligament-reconstructed knees.” The American journal of sports medicine 27.4 (1999): 402-416.

About the score developer:

The Modified Cincinnati Knee Rating System was developed by Dr. K. Donald Shelbourne, MD. Dr. Shelbourne’s research has focused on repair and recovery from ACL injuries, as well as the measurement of outcomes related to orthopedic procedures. He is currently Associate Clinical Professor in the Department of Orthopaedic Surgery at the Indiana University School of Medicine, as well as the founder of the Shelbourne Knee Center in Indianapolis where he operates in private practice.

To view his publications, please visit PubMed.
To view the webpage of his private medical practice, click here.