System 4 Pro™

< back to product overview

Biodex System 4 Dynamometer

ACLR does not always lead to successful outcomes and return to sport, and the costs can be significant. Current research shows specific criteria to determine RTP that includes isokinetic testing can help reduce the likelihood of reinjury.

Biodex is proud to support those who insist on objective data to return athletes to sport safely. For more information, contact us at (800) 224-6339 (+1-631-924-9000), or [email protected].  


Research Article
Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: The Delaware-Oslo ACL cohort study
Hege Grindem, Lynn Snyder-Mackler, Håvard Moksnes, et al.
British Journal of Sports Medicine, 2016

Research Article
Likelihood of ACL graft rupture: Not meeting six clinical discharge criteria before return to sport is associated with a four times greater risk of rupture
Polyvios Kyritsis, Roald Bahr, Philippe Landreau, et al.
British Journal of Sports Medicine, 2016

Research Article
Risk of Secondary Injury in Younger Athletes After Anterior Cruciate Ligament Reconstruction: A Systematic Review and Meta-analysis

Amelia J. Wiggins, DO, Ravi K. Grandhi, MBA, Daniel K. Schneider, et al.
American Journal of Sports Medicine, 2016

Research Article
Exploring the High Reinjury Rate in Younger Patients Undergoing Anterior Cruciate Ligament Reconstruction
Kate E. Webster, PhD, Julian A. Feller, FRACS
American Journal of Sports Medicine, 2016

Keep calm and carry on return to sport testing after an ACL injury: clinician-scientists weigh in on knee injury risk 
Jacob J. Capin, Lynn Snyder-Mackler, May Arna Risberg & Hege Grindem
British Journal of Sports Medicine, 2019

Research Article
ACL Return to Sport Guidelines and Criteria
George J. Davies, Eric McCarty, Matthew Provencher, et al.
Current Review Musculoskeletal Medicine, 2017

The Relationship Between Subjective Knee Scores, Isokinetic Testing, and Functional Testing in the ACL-Reconstructed Knee
Kevin E. Wilk, PT, William T. Romaniello, ATC, Susan M. Soscia, PT, et al.
Journal of Orthopedic & Sports Physical Therapy, 1994

Return to play checklist reduces re-injury for athletes following anterior cruciate ligament
American Academy of Orthopaedic Surgeons
Science Daily, March 6 2018

Research Article
Two Year ACL Reinjury Rate of 2.5%: Outcomes Report of the Men in a Secondary ACL Injury Prevention Program (ACL-Sports)

Amelia J. H. Arundale, Jacob J. Capin, Ryan Zarzycki, Angela H. Smith, Lynn Snyder-Mackler
International Journal of Sports Physical Therapy, 2018

Getting Injured Players Back on the Field
Dr. Riley J. Williams III
The New York Times Soccer Blog, January 2011

Research Abstract
Isokinetic Muscle Performance After Anterior Cruciate Ligament Reconstruction: A Case-Control Study
Alexandre R.M. Pelegrinelli, Leandro C. Guenka, Josilainne M. Dias, et al.
International Journal of Sports Physical Therapy, 2018

Research Article
Development and Validation of a Short Version of the Anterior Cruciate Ligament Return to Sport After Injury (ACL-RSI) Scale
Kate E. Webster, PhD and Julian A. Feller, FRACS
Orthopaedic Journal of Sports Medicine, 2018

Research Report
A Progressive 5-Week Exercise Therapy Program Leads to Significant Improvement in Knee Function Early After Anterior Cruciate Ligament Injury
Ingrid Eitzen, PT, PhD, Håvard Moksnes, PT, MSc, et al.
Journal of Orthopaedic & Sports Physical Therapy, 2010

Case Report
Knee Biomechanics and Physical Performance; an ACL-Reconstructed Athlete Before and After Isokinetic Strength Training
Hafiz Muhammad Manan Haider Khan, Tahir Masood
The Professional Medical Journal, 2017

You may also like:
System 4 Product Overview


Case Studies




This site uses cookies. By continuing to browse the site, you are agreeing to our use of cookies.

Read More