Enhancing Clinical Measurement of Knee Rotations Following ACL Injury and Reconstruction


Carl Imhauser, PhD, Biomechanics Department
Andrew D. Pearle, MD, Sports Medicine & Shoulder Service
Thomas L. Wickiewicz, MD, Sports Medicine & Shoulder Service

Project Description

Clinical examination of the ACL-injured and -reconstructed knee is severely limited. For example, a uniplanar test of anterior laxity shows no correlation with patient outcome. In contrast, the pivot shift exam, a test of the rotational stability of the knee, is closely associated with patient outcomes. In fact, positive findings with this exam correlate with compromised function and may indicate increased risk of osteoarthritis (OA). Unfortunately, this exam is qualitative and subjective. Lack of quantitative and objective clinical measurement of knee rotations in large cohorts of patients severely hampers clinical research aimed at comparative effectiveness of ACL reconstruction techniques for public health recommendations, and impairs the ability to determine the pathomechanics that link ACL injury and reconstruction to OA. Our group is working to overcome this limitation by developing a new measurement instrument, which will provide objective, quantitative measurement of knee rotations. As a first step in the clinical implementation of this new measurement instrument, we will conduct an in vitro study to assess its safety,  accuracy and reliability. The summer student will be involved in all aspects of this study including specimen preparation and dissection, and data collection and analysis.

This position has been filled.