A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot study

Objectives: 1. Assess serum biomarker responses of the anterior cruciate ligament reconstructed (ACLR) knee compared to the non-injured contralateral knee in a lateral tilt paradigm. 2. Determine the relationship between kinematics at the ACLR knee and serum biomarker responses. Method: Cross-sequen...

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Main Authors: Prakash Jayabalan, Rose Darcy, Vikram Darbhe, Zander Neuville, Vehniah Tjong, Levi Hargrove, Leah Welty, Thomas Schnitzer
Format: Article
Language:English
Published: Elsevier 2025-09-01
Series:Osteoarthritis and Cartilage Open
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Online Access:http://www.sciencedirect.com/science/article/pii/S266591312500055X
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author Prakash Jayabalan
Rose Darcy
Vikram Darbhe
Zander Neuville
Vehniah Tjong
Levi Hargrove
Leah Welty
Thomas Schnitzer
author_facet Prakash Jayabalan
Rose Darcy
Vikram Darbhe
Zander Neuville
Vehniah Tjong
Levi Hargrove
Leah Welty
Thomas Schnitzer
author_sort Prakash Jayabalan
collection DOAJ
description Objectives: 1. Assess serum biomarker responses of the anterior cruciate ligament reconstructed (ACLR) knee compared to the non-injured contralateral knee in a lateral tilt paradigm. 2. Determine the relationship between kinematics at the ACLR knee and serum biomarker responses. Method: Cross-sequential study. 16 participants 2–7 years post-ACLR, undertook two 30 ​min walking sessions on a 10° angular tilted treadmill towards the ACLR knee and/or contralateral non-injured knee. Serum collected at baseline and after 30 ​min of walking was tested for biomarkers associated with osteoarthritis (Cartilage oligomeric matrix protein [COMP]), C-terminal cross-linked telopeptides of type II collagen, matrix metalloproteinase-3,-13, ADAM a disintegrin and metalloproteinase with thrombospondin motifs 4-,-5 (ADAMTS-4,-5), interleukin-1β,-6,-8 and RANTES (regulated on activation, normal T-cell expressed and secreted). Kinematic measurements were also taken. Results: When tilted towards the ACLR knee, there was a significant increase in COMP compared to baseline (mean 41.1 ​ng/mL (95%CI:13.8,68.4), not observed when tilted towards the contralateral knee. There was a significant correlation between change in COMP concentration and change in knee adduction/abduction angle (r ​= ​−0.58,p ​= ​0.02). There were no relationships to kinematics and the other biomarkers. Conclusions: The tilt paradigm identified a differential response of a serum mechanosensitive marker (COMP) when testing an ACLR and contralateral knee. There was also a significant relationship between COMP response to tilt walking and the change in knee adduction angle of the ACLR knee. This paradigm could be an aid to provide individual knee biomarker response to a mechanical stress in asymptomatic individuals at risk of developing post-traumatic osteoarthritis at least 2 years post-ACLR.
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spelling doaj-art-3c9b2a90a8bb4c028ba250359f0ab0482025-08-20T02:17:14ZengElsevierOsteoarthritis and Cartilage Open2665-91312025-09-017310061910.1016/j.ocarto.2025.100619A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot studyPrakash Jayabalan0Rose Darcy1Vikram Darbhe2Zander Neuville3Vehniah Tjong4Levi Hargrove5Leah Welty6Thomas Schnitzer7Shirley Ryan AbilityLab, USA; Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Corresponding author. Shirley Ryan AbilityLab, USA.Shirley Ryan AbilityLab, USA; Northwestern University Feinberg School of Medicine, Chicago, IL, USAShirley Ryan AbilityLab, USANorthwestern University Feinberg School of Medicine, Chicago, IL, USANorthwestern University Feinberg School of Medicine, Chicago, IL, USAShirley Ryan AbilityLab, USA; Northwestern University Feinberg School of Medicine, Chicago, IL, USANorthwestern University Feinberg School of Medicine, Chicago, IL, USANorthwestern University Feinberg School of Medicine, Chicago, IL, USAObjectives: 1. Assess serum biomarker responses of the anterior cruciate ligament reconstructed (ACLR) knee compared to the non-injured contralateral knee in a lateral tilt paradigm. 2. Determine the relationship between kinematics at the ACLR knee and serum biomarker responses. Method: Cross-sequential study. 16 participants 2–7 years post-ACLR, undertook two 30 ​min walking sessions on a 10° angular tilted treadmill towards the ACLR knee and/or contralateral non-injured knee. Serum collected at baseline and after 30 ​min of walking was tested for biomarkers associated with osteoarthritis (Cartilage oligomeric matrix protein [COMP]), C-terminal cross-linked telopeptides of type II collagen, matrix metalloproteinase-3,-13, ADAM a disintegrin and metalloproteinase with thrombospondin motifs 4-,-5 (ADAMTS-4,-5), interleukin-1β,-6,-8 and RANTES (regulated on activation, normal T-cell expressed and secreted). Kinematic measurements were also taken. Results: When tilted towards the ACLR knee, there was a significant increase in COMP compared to baseline (mean 41.1 ​ng/mL (95%CI:13.8,68.4), not observed when tilted towards the contralateral knee. There was a significant correlation between change in COMP concentration and change in knee adduction/abduction angle (r ​= ​−0.58,p ​= ​0.02). There were no relationships to kinematics and the other biomarkers. Conclusions: The tilt paradigm identified a differential response of a serum mechanosensitive marker (COMP) when testing an ACLR and contralateral knee. There was also a significant relationship between COMP response to tilt walking and the change in knee adduction angle of the ACLR knee. This paradigm could be an aid to provide individual knee biomarker response to a mechanical stress in asymptomatic individuals at risk of developing post-traumatic osteoarthritis at least 2 years post-ACLR.http://www.sciencedirect.com/science/article/pii/S266591312500055XKneePost-traumatic osteoarthritisBiomarkersBiomechanics
spellingShingle Prakash Jayabalan
Rose Darcy
Vikram Darbhe
Zander Neuville
Vehniah Tjong
Levi Hargrove
Leah Welty
Thomas Schnitzer
A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot study
Osteoarthritis and Cartilage Open
Knee
Post-traumatic osteoarthritis
Biomarkers
Biomechanics
title A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot study
title_full A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot study
title_fullStr A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot study
title_full_unstemmed A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot study
title_short A novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction: A pilot study
title_sort novel mechanosensitive stress test in individuals following anterior cruciate ligament reconstruction a pilot study
topic Knee
Post-traumatic osteoarthritis
Biomarkers
Biomechanics
url http://www.sciencedirect.com/science/article/pii/S266591312500055X
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