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The Injury Report

with Sports Surgeon, Dr. Catherine Logan

September 7, 2020

How Much Time is Needed Between Serial “Return to Play” Assessments to Achieve Clinically Important Strength Gains in Patients Recovering From ACLR?
SourceAJSM, first published November 22, 2019


Clinical Question: To compare outcomes among patients assessed at different time points after ACLR, determine strength gains indicative of improvements in subjective function, and determine the amount of time necessary to achieve meaningful strength gains. 


Bottom Line:  Subjective IKDC and quad function increased when tested at later time points. Approximately 2 months is needed to observe clinically meaningful improvements BETWEEN assessment time points. 
Points to Consider: Cross-sectional/case control (Level 3). 293 patients participated s/p ACLR. Participants were stratified on the month of their evaluation following ACLR: 5-6 mos, 6-7 mos, 7-8 mos and 8-9 mos. IKDC subjective form, knee extensor & flexor torque and symmetry were assessed with an isokinetic dynamometer and compared. 

About the Author:
Catherine A. Logan, MD, MBA, MSPT is a sports medicine Orthopaedic Surgeon and writer. Based in Denver, CO, she is an attending at Colorado Sports Medicine & Orthopaedics at Rose Medical Center. Dr. Logan is the Head League Physician for Premier Lacrosse League (PLL) member of the team physician pool for the US Ski & Snowboard teams each year. Dr. Logan completed her Orthopaedic Surgery residency at the Harvard Combined Orthopaedic Residency Program and her Sports Medicine Fellowship training at the prestigious Steadman Philippon Research Institute/The Steadman Clinic in Vail, CO. Logan is also on the board of The Chill Foundation.

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