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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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Risk Factor Analysis for Graft Failure after Anterior Cruciate Ligament Reconstruction with or without mLET Abstract Presentation 7 minutes Filip R Hendrikx, MD, BELGIUM Koen Lagae, MD, BELGIUM Annemieke Van Haver, PhD, MSc, BELGIUM Peter Verdonk, MD, PhD, BELGIUM
The Use Of An Internal Brace In A Single Bundle Hamstring Graft And Its Effect On Graft Healing At 1 Year After Anterior Cruciate Ligament Reconstruction ePoster Presentation Claire Bolton, FRACS, MBBS, AUSTRALIA Brett A. Fritsch, MBBS BSc(Med), FRACS, FAOrthA, AUSTRALIA David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIA Bruno M. Giuffré, MD, AUSTRALIA
Outcomes Following Anterior Cruciate Ligament Reconstruction in Young Patients: An Observational Study. ePoster Presentation Kunal Mohan, MB MCh MRCSI, IRELAND David Cooper, MB MRCSI, IRELAND Niall McGoldrick, MB MCh FRCS (Tr & Orth), IRELAND Martin Davey, MB MCh MRCSI, IRELAND Megan Diack, MBCHB, MRCSI, MCh, IRELAND Paula McQuail, MB FRCSI, IRELAND Fintan J. Shannon, FRCS (Tr/Orth), IRELAND
Factors associated with anterior cruciate ligament (ACL) reconstruction among ACL injuries in Alberta, Canada ePoster Presentation Yuba Raj Paudel, MPH, CANADA Mark F. Sommerfeldt, MD, CANADA Donald C. Voaklander, PhD, CANADA
Xenograft For Anterior Cruciate Ligament Reconstruction Was Associated With High Graft Processing Infection. Abstract Presentation 6 minutes Willem M. van der Merwe, MBChB, FCS(SA)Ortho, SOUTH AFRICA Martin Lind, MD, PhD, Prof., DENMARK Peter Faunoe, MD, DENMARK Kees van Egmond, MD, NETHERLANDS Stefano Zaffagnini, MD, Prof., ITALY Maurilio Marcacci, MD, ITALY Ramon Cugat Bertomeu, MD, PhD, SPAIN Rene E. Verdonk, Prof Em, MD, PhD, BELGIUM Ernique Ibanez, MD, PhD, SPAIN Giulio Maria Marcheggiani Muccioli, MD, PhD, Associate Professor, ITALY
PROSPECTIVE RANDOMIZED STUDY: Double-bundle against single-bundle ACL reconstruction using allografts Abstract Presentation 5 minutes Edmundo Berumen Nafarrate, PhD, Prof., MEXICO Carlos Alejandro Vega Najera, MD, MEXICO Joel Alejandro Cabral, MD, MEXICO Jesus Javier Tonche, MD, MEXICO Ivan Ramos Moctezuma, Eng, MEXICO Luis Sigala Gonzalez, Eng, MEXICO Avril Pérez Fontes, MD, MEXICO Fatima Quintana Trejo, Eng, MEXICO Carlos Leal, MD, Prof., COLOMBIA
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
Contralateral versus ipsilateral quadriceps graft, for anterior cruciate ligament reconstruction. Abstract Presentation 6 minutes Franco Della Vedova, ARGENTINA Hernan Galan, MD, ARGENTINA Daniel A. Slullitel, MD, Prof., ARGENTINA
Quadriceps Tendon Vs. Hamstring Tendon Autograft In Primary Anterior Cruciate Ligament Reconstruction: A Matched-Pairs Study With A Mean Follow-Up Of 6.5 Years Award Winner 5 minutes Armin Runer, PD MD, GERMANY Aline Suter, MD, AUSTRIA Tommaso Roberti di Sarsina, MD, ITALY Caroline Hepperger, PhD, AUSTRIA Peter Gföller, MD, AUSTRIA Christian Hoser, MD, AUSTRIA Robert Csapo, PhD, AUSTRIA Christian Fink, MD, Prof., AUSTRIA

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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