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Creating A Crosswalk For Knee Outcomes After ACLR From The KOOS(5) To The IKDC-SKF

Jessica L. Johnson, DPT, PhD
UNITED STATES

Creating A Crosswalk For Knee Outcomes After ACLR From The KOOS(5) To The IKDC-SKF

Jessica L. Johnson, DPT, PhD, UNITED STATES Aaron Boulton, PhD, UNITED STATES Kurt Paul Spindler, MD, UNITED STATES Laura J. Huston, MS, UNITED STATES Tim Spalding, FRCS(Orth), UNITED KINGDOM Laura Asplin, UNITED KINGDOM May Arna Risberg, PT, PhD, NORWAY Lynn Snyder-Mackler, PT, ScD, FAPTA, UNITED STATES

University of Delaware, Newark, DE, UNITED STATES

2021 Congress Abstract Presentation 6 minutes Not yet rated

Anatomic Location

Knee

Anatomic Structure

Ligaments

Ligaments

ACL

Sports Medicine

Rehabilition / Physical Therapy Outcome Studies

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Summary: We created a statistical method to convert KOOS scores to IKDC-SKF scores pre- and post-ACLR using three large datasets to enable more rigorous comparisons and pooling for meta-analysis.

The variance of patient reported outcomes measures (PROM) used in both clinical and research practice limits the comparison of outcomes and prevents pooling of data for meta-analysis. Two commonly used PROM in anterior cruciate ligament (ACL) registries and cohorts are the Knee Injury Osteoarthritis Outcomes Survey (KOOS) and International Knee Documentation Committee-Subjective Knee Form (IKDC-SKF), but few studies collect or report both scores. Our objective was to create a statistical method to convert averaged KOOS scores to IKDC-SKF scores to enable more rigorous comparisons and pooling for meta-analysis.

Methods

We used equipercentile equating methods to create a statistical crosswalk in one ACL cohort at three time-points: pre-ACL reconstruction (ACLR) and 24- and 72-months after ACLR; this was validated in two other ACL cohorts at similar time-points: pre-ACLR and 24- and 60-months post-ACLR.

Results

We observed high correlations (r=0.81-0.90), unidimensionality (first to second eigenvalues= 8.7-13.3), and subpopulation invariance (root expected mean squared difference=0.009-0.017). The smallest disagreements between crosswalked and true scores was using the 24-month scores; these had a bias of less than 0.1 standard deviation unit.

Conclusion

Our crosswalk is statistically merited and accurately converts group level average KOOS scores to IKDC-SKF scores. This tool will allow for more comparisons and meta-analyses of outcomes after ACL reconstruction, improving our treatment of and outcomes after ACL injury and reconstruction.

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THE OUTCOME OF BALANCE EXERCISES AND AGILITY TRAINING FOR POST ANTERIOR CRUCIATE LIGAMENT (ACL) RECONSTRUCTION: CLINICAL ASSESSMENT Abstract Presentation 7 minutes SITI MAIZATUL AKMAL ISMAIL, Medical Science (Orthopaedic Surgery Sports), MALAYSIA
Acl - Pcl Fixation Sequence During Multi-Ligament Knee Reconstruction Does Not Affect Knee Laxity Abstract Presentation 6 minutes Carola F. van Eck, MD, PhD, FAAOS, UNITED STATES Aly Maher Fayed, MD, EGYPT Ryo Kanto, MD, JAPAN Taylor M. Price, MS, UNITED STATES Michael Dinenna, BS, UNITED STATES Monica A. Linde, MSIE, RN, UNITED STATES Patrick J. Smolinski, PhD, UNITED STATES
Risk Factors for Grade 3 Pivot Shift in Acute ACL-Injured Knees Abstract Presentation 5 minutes Adnan Saithna, MD, FRCS, UNITED STATES Edoardo Monaco, MD, ITALY Edoardo Gaj, MD, ITALY Valerio Andreozzi, ITALY Alessandro Annibaldi, MD, ITALY Alessandro Carrozzo, MD, ITALY Thais Dutra Vieira, MD, FRANCE Bertrand Sonnery-Cottet, MD, PhD, FRANCE Andrea Ferretti, Prof., ITALY
Quadriceps Tendon Autograft Has Lower MRI Signal Than Hamstring Tendon Autograft In Anterior Cruciate Ligament Reconstructions Of Adolescent Athletes Abstract Presentation 5 minutes David Alcoloumbre, MD, UNITED STATES Alexandra Hunter Aitchison, UNITED STATES Douglas Mintz, MD, UNITED STATES Frank A. Cordasco, MD, MS, UNITED STATES Daniel W. Green, MD, MS, UNITED STATES
Pre-Operative Tunnel Widening Does Not Significantly Influence The Outcomes Of A Single-Stage Only Approach To Revision Acl Reconstruction: An Analysis Of 409 Consecutive Patients Abstract Presentation 5 minutes Adnan Saithna, MD, FRCS, UNITED STATES Charles Pioger, MD, FRANCE Johnny Rayes, MD, MSc, FEBOT, CANADA Ibrahim Haidar, MD, FRANCE Thomas Fradin, MD, FRANCE Cédric Ngbilo, MD, SWITZERLAND Thais Dutra Vieira, MD, FRANCE Etienne Cavaignac, MD,PhD, FRANCE Bertrand Sonnery-Cottet, MD, PhD, FRANCE
Changes In Muscle Strength And Hop Performance After ACL Reconstruction. A Randomized Controlled Trial Comparing Patellar Tendon And Hamstring Tendon Autografts With Standard Or Accelerated Rehabilitation Abstract Presentation 6 minutes Riccardo Cristiani, MD, PhD, SWEDEN Christina Mikkelsen, PT, SWEDEN Peter Olov Wange, MD, SWEDEN Daniel Olsson, PhD, SWEDEN Anders Stalman, MD, PhD, associate professor, SWEDEN Bjorn Engstrom, MD, PhD, Assoc. Prof., SWEDEN
Predicting Subjective Failure of ACL Reconstruction: A Machine Learning Analysis of the Norwegian Knee Ligament Register and Patient Reported Outcomes Award Winner 5 minutes R. Kyle Martin, MD, FRCSC, UNITED STATES Solvejg Wastvedt, BA, UNITED STATES Ayoosh Pareek, MD, UNITED STATES Andreas Persson, MD, PhD, NORWAY Havard Visnes, MD, PT, PhD, NORWAY Anne Marie Fenstad, MSc, NORWAY Gilbert Moatshe, MD, PhD, NORWAY Julian Wolfson, PhD, UNITED STATES Lars Engebretsen, MD, PhD, NORWAY
Return To Elite Sport After ACL Reconstruction In 376 'Professional' Athletes Abstract Presentation 5 minutes Kyle Borque, MD, UNITED STATES Mary Jones, Msc Grad Dip Phys, UNITED KINGDOM Ganesh Balendra, MBBS, AUSTRALIA Lukas Willinger, MD, GERMANY Vitor Hugo Pinheiro, MD, UNITED KINGDOM Andy Williams, MBBS, FRCS(Orth), FFSEM(UK), UNITED KINGDOM
Tunnel Position In Anterior Cruciate Ligament Reconstruction Varies Between High Volume And Low Volume Surgeons Abstract Presentation 6 minutes Jonathan D Hughes, MD, UNITED STATES Christopher M. Gibbs, MD, UNITED STATES Akere Atte, MD, PharmD, UNITED STATES Anmol Almast, BS, UNITED STATES Mikael Sansone, MD, PhD, SWEDEN Jon Karlsson, MD, PhD, Prof., SWEDEN Volker Musahl, MD, Prof., UNITED STATES

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Creating A Crosswalk For Knee Outcomes After ACLR From The KOOS(5) To The IKDC-SKF

Creating A Crosswalk For Knee Outcomes After ACLR From The KOOS(5) To The IKDC-SKF

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Creating A Crosswalk For Knee Outcomes After ACLR From The KOOS(5) To The IKDC-SKF

Creating A Crosswalk For Knee Outcomes After ACLR From The KOOS(5) To The IKDC-SKF

Methods

Results

Conclusion

More ISAKOS 2021: Global Content