2023 ISAKOS Biennial Congress ePoster
A Comparison of Multimodal Return-To-Sport Testing and Force Plate-Based Balance Testing Among Anterior Cruciate Ligament Reconstruction Patients
Dhruv Sundar Shankar, BS, New York, New York UNITED STATES
Heather Milton, Masters, New York, New York UNITED STATES
Ciara Ostrander, BS, New York, New York UNITED STATES
Luilly Vargas, MD, New York, New York UNITED STATES
Eric Jason Strauss, MD
Kirk Anthony Campbell, MD, New York, NY UNITED STATES
Michael J Alaia, MD, New York, New York UNITED STATES
Guillem Gonzalez-Lomas, MD, New York, NY UNITED STATES
Laith M. Jazrawi, MD, New York, NY UNITED STATES
NYU Langone Medical Center, New York, New York, UNITED STATES
FDA Status Not Applicable
Summary
Force plate-based balance testing metrics are significantly correlated with key components of the ACLR RTS protocol, including knee flexion ROM testing and quadriceps isokinetic strength testing.
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Abstract
Background
Return to sport (RTS) testing after anterior cruciate ligament reconstruction (ACLR) surgery often involves the use of expensive modalities such as isokinetic strength testing. Force plate-based balance testing may provide a simpler alternative to some components of a traditional multimodal RTS testing battery. The purpose of our study was to identify correlations between RTS test findings and balance metrics.
Methods
We conducted a cross-sectional study of patients who underwent ACLR at our center and were at least 6 months postoperative. Subjects completed our multimodal Institutional Return-to-Sport (IRTS) testing battery which included hip and knee range of motion (ROM) testing and isokinetic quadriceps strength testing. Subjects also underwent balance testing on a commercially-available force plate. Associations between IRTS findings and balance metrics were measured using the Spearman rank correlation coefficient. Significance of each correlation was evaluated at ? = 0.05.
Results
Sixteen patients (7 male, 9 female) were enrolled with a median age of 29 years (range 20-47). Greater left–right symmetry of the sway velocity mean (SVM) was positively correlated with passive knee flexion ROM (p = 0.02), hamstring flexibility (p = 0.04), quadriceps strength (p = 0.03), passing the step-down test (p = 0.01), and passing the lateral Bunkie test (p = 0.02) for the involved side. Greater left-right symmetry of the multiscale vertical entropy (MVE) was positively correlated with quadriceps strength (p = 0.02) and passing the triple jump test (p = 0.046) on the involved side.
Conclusion
Force plate-based balance testing metrics are significantly correlated with key components of the ACLR RTS protocol, including knee flexion ROM testing and quadriceps isokinetic strength testing. Therefore, balance testing may serve as a convenient proxy for these measurements when assessing RTS readiness after ACLR.