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Return To Sports After Paediatric Anterior Cruciate Ligament Reconstruction (ACLR): Normal Population Vs An ACLR Cohort

Alexander S. Nicholls, MSc, FRACS
AUSTRALIA

Return To Sports After Paediatric Anterior Cruciate Ligament Reconstruction (ACLR): Normal Population Vs An ACLR Cohort

Alexander S. Nicholls, MSc, FRACS, AUSTRALIA Jillian Lee, BHB, MBChB, FRACS (Ortho), NEW ZEALAND Yoong Lim, BEng, PhD, AUSTRALIA Quang Dao, FRACS, AUSTRALIA

Sydney Orthopaedic Research Institute, Sydney, NSW, AUSTRALIA

2021 Congress Abstract Presentation 6 minutes Not yet rated

Anatomic Location

Knee

Anatomic Structure

Ligaments

Diagnosis / Condition

Instability

Treatment / Technique

Repair / Reconstruction

Ligaments

ACL

Patient Populations

Pediatric / Adolescent Sport Specific Population

Sports Medicine

Basic Science Exercise Physiology Rehabilition / Physical Therapy Biomechanics

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Summary: 12 months after ACLR, most children demonstrate significant deconditioning on their uninjured leg relative to a normative population

Introduction

Return to sport (RTS) functional testing post-ACLR relies on the comparison against the healthy limb (with >90% performance considered satisfactory). Limited normative paediatric population data exists. In addition, the effect of leg dominance in this population is unknown. We hypothesised that the normal limb (uninjured limb) in paediatric patients 12 months post-ACLR would differ from the normal population values, in functional RTS testing. In addition, we hypothesized that limb dominance would account for significantly better functional scores which may account for misleading RTS results post surgery.

Methods

87 healthy children (mean age 14 years 8 months) were recruited from local schools and community sports clubs. This normative group underwent routine RTS functional testing to gain control values. 87 post-ACLR children (matched for age, height, weight and Tegner activity level) underwent RTS functional testing in our research institute. Study participants in both groups carried out the following functional tests: knee range of motion, hamstring strength, quadriceps strength, hop for distance, hop for height and cross-over hop. Differences between the normal (uninjured) limb of the post-ACLR group and the normal healthy group were highlighted. The effect of leg dominance on RTS testing performance was also assessed within the normal group.

Results

The normal limb of the post-ACLR group performed significantly worse than the normal (control) population in all functional testing results hamstring strength (control, 85.33±42.84 Nm; non-injured ACLR, 52.3±45.23 Nm; p=0.0001), quadriceps strength (control, 183.6±75.6 Nm; non-injured ACLR, 143.16±115.98 Nm; p=0.02), hop for distance (control, 86.52±28.19 cm; non-injured ACLR, 61.84±25.6 cm; p=0.0001) and hop for height (control, 24.8±7.15 cm; non-injured ACLR, 21.76±7.48cm; p=0.0001). Leg dominance in the normal population significantly positively effects quads strength (4% higher in dominant limb; dominant, 315.1±99.4Nm; non-dominant, 302.9±92.2Nm; p=0.006), triple hop (3% higher in dominant limb; dominant, 434.2±88.1cm; non-dominant, 423.2±87.0cm; p=0.006) and hop height (7% higher in dominant limb; dominant, 23.8±8.8cm; non-dominant, 22.2±7.9cm; p=0.01), but has no significant effect on other tests.

Conclusion

RTS functional testing at 12 months post-ACLR demonstrates deconditioning in the normal limb relative to a healthy age-matched paediatric population. This may imply contralateral injury risk and consideration should be given to longer rehabilitation periods. The effect of limb dominance in the paediatric population does not significantly affect outcome of RTS testing. Hence, limb dominance is unlikely to cause false positives or false negatives in the RTS testing.

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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
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, Assist. 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
Impingement Due to Graft Buckling Is More Prevalent after ACL Reconstructions with an Adjustable-Loop Compared to a Fixed-Loop Abstract Presentation 5 minutes Julian De Rover, NETHERLANDS Inge Van Den Akker-Scheek, PhD, NETHERLANDS Hugo Christiaan van der Veen, MD, PhD, NETHERLANDS
Bone Marrow Aspiration Concentrate Augmentation in Anterior Cruciate Ligament Hamstring Autograft Reconstruction: Clinical and Functional Outcomes of a Cohort Study Abstract Presentation 5 minutes David H. Figueroa, MD, CHILE Rodrigo Guiloff, MD, Prof, CHILE Sergio Arellano, MD, CHILE Alex Vaisman, MD, Prof., CHILE Francisco Figueroa, MD, CHILE Nicolas Zilleruelo, MD, CHILE Rafael Calvo, MD, CHILE
MRI After ACL Reconstruction Demonstrates that Hamstring Grafts Heal and Integrate at Different Rates Abstract Presentation 6 minutes Sven Edward Putnis, MB ChB FRCS(Tr&Orth), UNITED KINGDOM Takeshi Oshima, MD, PhD, JAPAN Antonio Klasan, MD, AUSTRIA Samuel Grasso, PhD, B. Engineering (Mechanical), AUSTRALIA Thomas Neri, MD, PhD, Prof., FRANCE Myles R. J. Coolican, FRACS, AUSTRALIA Brett A. Fritsch, MBBS BSc(Med), FRACS, FAOrthA, AUSTRALIA David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIA
Coach Education Improves Implementation Of ACL Injury Prevention Programs: A Cluster-Randomized Controlled Trial Abstract Presentation 5 minutes Daphne Ling, PhD, MPH, TAIWAN Caroline Boyle, UNITED STATES Brandon Schneider, MS, UNITED STATES Joseph Janosky, DrPHc, MS, PT, ATC, UNITED STATES James Kinderknecht, UNITED STATES Robert G. Marx, MD, UNITED STATES
Does In Vivo Kinematics Following Acl Reconstruction With Or Without Lateral Extraarticular Tenodesis Correlate With Preoperative Quantitative Pivot Shift? Abstract Presentation 5 minutes Christopher M. Gibbs, MD, UNITED STATES Philipp Wilhelm Winkler, MD, AUSTRIA Jonathan D Hughes, MD, UNITED STATES Adam Popchak, DPT, PhD, UNITED STATES Daisuke Chiba, MD, PhD, JAPAN Bryson P. Lesniak, MD, UNITED STATES William Anderst, PhD, UNITED STATES Volker Musahl, MD, Prof., UNITED STATES
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
Clinical Outcomes Of Primary Acl Reconstruction With Tibial Attachment Preserving Quadrupled Hamstring Graft: Does Graft Size Matter? - A Prospective Study With Review Of Literature Abstract Presentation 5 minutes Shaival Dalal, M.S.MRCS(Edinburgh), UNITED KINGDOM Ghislain N. Aminake , MBBS, MMed(Ortho),MRCPS(Glasg), QATAR Randy Guro, BSc, UNITED KINGDOM Amit Pramod Chandratreya, FRCS(Tr&Orth), MS(Orth), MCh(Orth), UNITED KINGDOM Rahul Kotwal, FRCS(Ortho), UNITED KINGDOM
The Effect Of Lateral Extraarticular Tenodesis On In Vivo Cartilage Contact In Combined Anterior Cruciate Ligament Reconstruction ePoster Presentation Kyohei Nishida , MD, PhD, JAPAN Tom Gale, MS, UNITED STATES Daisuke Chiba, MD, PhD, JAPAN Felipe Martin Suntaxi, MS, UNITED STATES Bryson P. Lesniak, MD, UNITED STATES Freddie H. Fu, MD, UNITED STATES William Anderst, PhD, UNITED STATES Volker Musahl, MD, Prof., UNITED STATES
Same Knee, Different Goals: Patients and Surgeons have Different Priorities Related to ACL Reconstructions and Surgeons are Resistant to Changing Clinical Practice Abstract Presentation 4 minutes Hana Marmura, BSc, CANADA Dianne M. Bryant, PhD, CANADA Trevor B. Birmingham, PT, PhD, CANADA Kurt Paul Spindler, MD, UNITED STATES Christopher C. Kaeding, MD, UNITED STATES Tim Spalding, FRCS(Orth), UNITED KINGDOM Alan Getgood, MD, FRCS(Tr&Orth), DipSEM, CANADA

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Return To Sports After Paediatric Anterior Cruciate Ligament Reconstruction (ACLR): Normal Population Vs An ACLR Cohort

Return To Sports After Paediatric Anterior Cruciate Ligament Reconstruction (ACLR): Normal Population Vs An ACLR Cohort

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Return To Sports After Paediatric Anterior Cruciate Ligament Reconstruction (ACLR): Normal Population Vs An ACLR Cohort

Return To Sports After Paediatric Anterior Cruciate Ligament Reconstruction (ACLR): Normal Population Vs An ACLR Cohort

Introduction

Methods

Results

Conclusion

More ISAKOS 2021: Global Content