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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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Comparative Study Of “Concomitant Patellar Tendon Rupture With Anterior cruciate ligament tear and Patellar Tendon Rupture With Multi- Ligamentous Knee Injury –MLKI” Abstract Presentation 6 minutes Silvampatti Ramasamy Sundararajan, MS(Orth), INDIA Rajagopalakrishnan Ramakanth, D.ortho, DNB(ortho), D.SICOT, INDIA S Rajasekaran, MS(Orth),DOrth,DNB,FRCS(Ed),FRCS(Lon),MCh(Liv),PhD, INDIA
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
Quantitative Evaluation of Lateral Articular Cartilage Quality on Magnetic Resonance Imaging at 2-years following Anterior Cruciate Ligament Reconstruction With Or Without A Lateral Extra-Articular Tenodesis Abstract Presentation 6 minutes Andrew Firth, PhD, CANADA Dianne M. Bryant, PhD, CANADA Jaques Milner , CANADA Stephany Pritchett, MD, FRCPC, DABR, CANADA David Holdsworth, PhD, Canada Stability Study Group, CANADA Alan Getgood, MD, FRCS(Tr&Orth), DipSEM, QATAR
Comparison of three different Quadriceps Tendon ACL graft to BTB and Semi-T grafts: A biomechanical study ePoster Presentation Marc Jacob Strauss, MD, NORWAY Jonathan Miles, M.S, UNITED STATES Mitchell Iung Kennedy, BS, UNITED STATES Gilbert Moatshe, MD, PhD, NORWAY Grant J Dornan, MS, UNITED STATES Martin Lind, MD, PhD, Prof., DENMARK Lars Engebretsen, MD, PhD, NORWAY Robert F. LaPrade, MD, PhD, UNITED STATES
Negative Effects Of Delayed Anterior Cruciate Ligament Reconstruction On Associated Injuries And Knee Laxity Abstract Presentation 6 minutes Riccardo Cristiani, MD, PhD, SWEDEN Per-Mats Janarv, MD, PhD, Associate Prof., SWEDEN Bjorn Engstrom, MD, PhD, Assoc. Prof., SWEDEN Gunnar Edman, MD, PhD, Prof., SWEDEN Magnus Forssblad, SWEDEN Anders Stalman, MD, PhD, Associate Professor, SWEDEN
In Vivo Measurement of Anterior Cruciate Ligament Elongation and Strain Rate during Increasingly Demanding Activities ePoster Presentation Kyohei Nishida , MD, PhD, JAPAN Caiqi Xu, MD, CHINA Tom Gale, MS, UNITED STATES William Anderst, PhD, UNITED STATES Freddie H. Fu, MD, UNITED STATES
PSM: Pivot Shift Meter Cellphone Application for Classifying ACL Injuries Abstract Presentation 5 minutes Edmundo Berumen Nafarrate, PhD, Prof., MEXICO Carlos Alejandro Vega Najera, MD, MEXICO Joel Alejandro Cabral, MD, MEXICO Luis Sigala Gonzalez, Eng, MEXICO Ivan Ramos Moctezuma, Eng, MEXICO Carlos Leal, MD, Prof., COLOMBIA Jesus Javier Tonche, MD, MEXICO Avril Pérez Fontes, MD, MEXICO Fatima Quintana Trejo, Eng, MEXICO
Ligamentous Laxity, Male Sex, Chronicity, Meniscus Injury And Posterior Tibial Slope Are Associated With A High-Grade Pre-Operative Pivot Shift: A Post Hoc Analysis Of The Stability Study Abstract Presentation 6 minutes Lachlan Batty, FRACS, AUSTRALIA Andrew Firth, PhD, CANADA Gilbert Moatshe, MD, PhD, NORWAY Dianne M. Bryant, PhD, CANADA S. Mark A. Heard, MD, FRCS, CANADA Robert G. McCormack, MD, CANADA Alex Rezansoff, MD, FRCSC, CANADA Devin Clarke Peterson, MD, FRCSC, Dip Sport Med, CANADA Davide Bardana, MD, CANADA Peter B. MacDonald, MD, FRCS, Dip Sport Med, CANADA Tim Spalding, FRCS(Orth), UNITED KINGDOM Alan Getgood, MD, FRCS(Tr&Orth), DipSEM, QATAR

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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