Clinical Outcomes After Anterior Cruciate Ligament Injury: Panther Symposium ACL Injury Clinical Outcomes Consensus Group

Eleonor Svantesson*, Eric Hamrin Senorski, Kate E. Webster, Jón Karlsson, Theresa Diermeier, Benjamin B. Rothrauff, Sean J. Meredith, Thomas Rauer, James J. Irrgang, Kurt P. Spindler, C. Benjamin Ma, Volker Musahl, Panther Symposium ACL Injury Clinical Outcomes Consensus Group the Panther Symposium ACL Injury Clinical Outcomes Consensus Group, Freddie H. Fu, Olufemi R. Ayeni, Francesco Della Villa, Stefano Della Villa, Scott Dye, Mario Ferretti, Alan GetgoodTimo Järvelä, Christopher C. Kaeding, Ryosuke Kuroda, Bryson Lesniak, Robert G. Marx, Gregory B. Maletis, Leo Pinczewski, Anil Ranawat, Bruce Reider, Romain Seil, Carola van Eck, Brian R. Wolf, Patrick Yung, Stefano Zaffagnini, Ming Hao Zheng

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)


A stringent outcome assessment is a key aspect of establishing evidence-based clinical guidelines for anterior cruciate ligament (ACL) injury treatment. To establish a standardized assessment of clinical outcome after ACL treatment, a consensus meeting including a multidisciplinary group of ACL experts was held at the ACL Consensus Meeting Panther Symposium, Pittsburgh, Pennsylvania, USA, in June 2019. The aim was to establish a consensus on what data should be reported when conducting an ACL outcome study, what specific outcome measurements should be used, and at what follow-up time those outcomes should be assessed. The group reached consensus on 9 statements by using a modified Delphi method. In general, outcomes after ACL treatment can be divided into 4 robust categories: early adverse events, patient-reported outcomes (PROs), ACL graft failure/recurrent ligament disruption, and clinical measures of knee function and structure. A comprehensive assessment after ACL treatment should aim to provide a complete overview of the treatment result, optimally including the various aspects of outcome categories. For most research questions, a minimum follow-up of 2 years with an optimal follow-up rate of 80% is necessary to achieve a comprehensive assessment. This should include clinical examination, any sustained reinjuries, validated knee-specific PROs, and health-related quality of life questionnaires. In the midterm to long-term follow-up, the presence of osteoarthritis should be evaluated. This consensus paper provides practical guidelines for how the aforementioned entities of outcomes should be reported and suggests the preferred tools for a reliable and valid assessment of outcome after ACL treatment.

Original languageEnglish
JournalOrthopaedic Journal of Sports Medicine
Issue number7
Publication statusPublished - 1 Jul 2020
Externally publishedYes


  • consensus statement
  • laxity
  • osteoarthritis
  • patient-reported outcome
  • reconstruction


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