Relationships Between Running Biomechanics and Femoral Articular Cartilage Thickness and Composition in Anterior Cruciate Ligament Reconstruction Patients.
Scand J Med Sci Sports
; 34(6): e14675, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38864455
ABSTRACT
BACKGROUND:
Although individuals with anterior cruciate ligament reconstruction (ACLR) are at high risk for posttraumatic osteoarthritis, mechanisms underlying the relationship between running and knee cartilage health remain unclear.OBJECTIVE:
We aimed to investigate how 30 min of running influences femoral cartilage thickness and composition and their relationships with running biomechanics in patients with ACLR and controls.METHODS:
Twenty patients with ACLR (time post-ACLR 14.6 ± 6.1 months) and 20 matched controls participated in the study. A running session required both groups to run for 30 min at a self-selected speed. Before and after running, we measured femoral cartilage thickness via ultrasound imaging. A MRI session consisted of T2 mapping.RESULTS:
The ACLR group showed longer T2 relaxation times in the medial femoral condyle at resting compared with the control group (central 51.2 ± 16.6 vs. 34.9 ± 13.2 ms, p = 0.006; posterior 50.2 ± 10.1 vs. 39.8 ± 7.4 ms, p = 0.006). Following the run, the ACLR group showed greater deformation in the medial femoral cartilage than the control group (0.03 ± 0.01 vs. 0.01 ± 0.01 cm, p = 0.001). Additionally, the ACLR group showed significant negative correlations between resting T2 relaxation time in the medial femoral condyle and vertical impulse (standardized regression coefficients = -0.99 and p = 0.004) during running.CONCLUSIONS:
Our findings suggest that those who are between 6 and 24 months post-ACLR have degraded cartilage composition and their cartilage deforms more due to running vGRF.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Running
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Magnetic Resonance Imaging
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Cartilage, Articular
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Femur
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Anterior Cruciate Ligament Reconstruction
Limits:
Adult
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Female
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Humans
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Male
Language:
En
Journal:
Scand J Med Sci Sports
Journal subject:
MEDICINA ESPORTIVA
Year:
2024
Document type:
Article
Affiliation country:
Country of publication: