scholarly journals Quantitative magnetic resonance imaging (MRI) morphological analysis of knee cartilage in healthy and anterior cruciate ligament-injured knees

2011 ◽  
Vol 20 (8) ◽  
pp. 1496-1502 ◽  
Author(s):  
Hong Li ◽  
Ali Hosseini ◽  
Jing-Sheng Li ◽  
Thomas J. Gill ◽  
Guoan Li
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Morphological Analysis ◽  
Cruciate Ligament ◽  
Resonance Imaging ◽  
Knee Cartilage ◽  
Quantitative Magnetic Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Anterior Cruciate

Top-Ten Tips for Imaging the ACL

2019 ◽  
Vol 23 (04) ◽  
pp. 444-452
Author(s):  
James F. Griffith ◽  
Alex W.H. Ng
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Cruciate Ligament ◽  
Resonance Imaging ◽  
Diagnostic Difficulty ◽  
Serious Injury ◽  
Magnetic Resonance Imaging Mri ◽  
Anterior Cruciate

AbstractTears of the anterior cruciate ligament (ACL) are common and represent a serious injury. Although diagnosis on magnetic resonance imaging (MRI) is usually straightforward, diagnostic difficulty can occasionally arise. This review provides tips for imaging the ACL in those scenarios where a confident diagnosis is not possible on standard MRI of the knee. Potential pitfalls while imaging the ACL are also discussed.

scholarly journals Higher aggrecan 1-F21 epitope concentration in synovial fluid early after anterior cruciate ligament injury is associated with worse knee cartilage quality assessed by gadolinium enhanced magnetic resonance imaging 20 years later

2020 ◽  
Author(s):  
Paul Neuman ◽  
Staffan Larsson ◽  
L Stefan Lohmander ◽  
André Struglics
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Synovial Fluid ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Resonance Imaging ◽  
Knee Cartilage ◽  
Knee Oa ◽  
Anterior Cruciate

Abstract Objective. To investigate if cartilage related biomarkers in synovial fluid are associated with knee cartilage status 20 years after an anterior cruciate ligament (ACL) injury. Methods. We studied 25 patients with a complete ACL rupture without subsequent ACL reconstruction or radiographic knee OA. All had a delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) 20 years after the ACL injury, using the T1 transverse relaxation time in the presence of gadolinium (T1Gd) which estimates the concentration of glycosaminoglycans in hyaline cartilage. Synovial fluid samples were aspirated acutely (between 0 and 18 days) and during 1 to 5 follow up visits between 0.5 and 7.5 years after injury. We quantified synovial fluid concentrations of aggrecan (epitopes 1-F21 and ARGS), cartilage oligomeric matrix protein, matrix metalloproteinase-3 and tissue inhibitor of metalloproteinase-1 by immunoassays, and sulfated glycosaminoglycans by Alcian blue precipitation. Results. Linear regression analyses (adjusted for age, sex, body mass index and time between injury and sampling) showed that acute higher synovial fluid 1-F21-aggrecan concentrations were associated with shorter T1Gd values 20 years after injury, i.e. inferior cartilage quality (standardized effects between -0.67 and -1.0). No other statistically significant association was found between molecular biomarkers and T1Gd values. Conclusion. Higher acute synovial fluid 1-F21-aggrecan concentrations in ACL injured patients, who managed to cope without ACL reconstruction and were without radiographic knee OA, were associated with worse knee cartilage quality assessed by dGEMRIC 20 years after injury.

scholarly journals Higher aggrecan 1-F21 epitope concentration in synovial fluid early after anterior cruciate ligament injury is associated with worse knee cartilage quality assessed by gadolinium enhanced magnetic resonance imaging 20 years later

2020 ◽  
Author(s):  
Paul Neuman ◽  
Staffan Larsson ◽  
L Stefan Lohmander ◽  
André Struglics
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Synovial Fluid ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Resonance Imaging ◽  
Knee Cartilage ◽  
Knee Oa ◽  
Anterior Cruciate

Abstract Background. To investigate if cartilage related biomarkers in synovial fluid are associated with knee cartilage status 20 years after an anterior cruciate ligament (ACL) injury.Methods. We studied 25 patients with a complete ACL rupture without subsequent ACL reconstruction or radiographic knee OA. All had a delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) 20 years after the ACL injury, using the T1 transverse relaxation time in the presence of gadolinium (T1Gd) which estimates the concentration of glycosaminoglycans in hyaline cartilage. Synovial fluid samples were aspirated acutely (between 0 and 18 days) and during 1 to 5 follow up visits between 0.5 and 7.5 years after injury. We quantified synovial fluid concentrations of aggrecan (epitopes 1-F21 and ARGS), cartilage oligomeric matrix protein, matrix metalloproteinase-3 and tissue inhibitor of metalloproteinase-1 by immunoassays, and sulfated glycosaminoglycans by Alcian blue precipitation. Western blot was used for qualitative analyses of aggrecan fragments in synovial fluid and cartilage samples.Results. Western blot indicated that the 1-F21 epitope was located within the chondroitin sulfate 2 region of aggrecan. Linear regression analyses (adjusted for age, sex, body mass index and time between injury and sampling) showed that acute higher synovial fluid 1-F21-aggrecan concentrations were associated with shorter T1Gd values 20 years after injury, i.e. inferior cartilage quality (standardized effects between -0.67 and -1.0). No other statistically significant association was found between molecular biomarkers and T1Gd values. Conclusion. Higher acute synovial fluid 1-F21-aggrecan concentrations in ACL injured patients, who managed to cope without ACL reconstruction and were without radiographic knee OA, were associated with inferior knee cartilage quality assessed by dGEMRIC 20 years after injury.

scholarly journals Higher aggrecan 1-F21 epitope concentration in synovial fluid early after anterior cruciate ligament injury is associated with worse knee cartilage quality assessed by gadolinium enhanced magnetic resonance imaging 20 years later

2020 ◽  
Author(s):  
Paul Neuman ◽  
Staffan Larsson ◽  
L Stefan Lohmander ◽  
André Struglics
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Synovial Fluid ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Resonance Imaging ◽  
Knee Cartilage ◽  
Knee Oa ◽  
Anterior Cruciate

Abstract Background. To investigate if cartilage related biomarkers in synovial fluid are associated with knee cartilage status 20 years after an anterior cruciate ligament (ACL) injury.Methods. We studied 25 patients with a complete ACL rupture without subsequent ACL reconstruction or radiographic knee OA. All had a delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) 20 years after the ACL injury, using the T1 transverse relaxation time in the presence of gadolinium (T1Gd) which estimates the concentration of glycosaminoglycans in hyaline cartilage. Synovial fluid samples were aspirated acutely (between 0 and 18 days) and during 1 to 5 follow up visits between 0.5 and 7.5 years after injury. We quantified synovial fluid concentrations of aggrecan (epitopes 1-F21 and ARGS), cartilage oligomeric matrix protein, matrix metalloproteinase-3 and tissue inhibitor of metalloproteinase-1 by immunoassays, and sulfated glycosaminoglycans by Alcian blue precipitation. Western blot was used for qualitative analyses of aggrecan fragments in synovial fluid and cartilage samples.Results. Western blot indicated that the 1-F21 epitope was located within the chondroitin sulfate 2 region of aggrecan. Linear regression analyses (adjusted for age, sex, body mass index and time between injury and sampling) showed that acute higher synovial fluid 1-F21-aggrecan concentrations were associated with shorter T1Gd values 20 years after injury, i.e. inferior cartilage quality (standardized effects between -0.67 and -1.0). No other statistically significant association was found between molecular biomarkers and T1Gd values. Conclusion. Higher acute synovial fluid 1-F21-aggrecan concentrations in ACL injured patients, who managed to cope without ACL reconstruction and were without radiographic knee OA, were associated with inferior knee cartilage quality assessed by dGEMRIC 20 years after injury.

scholarly journals Higher aggrecan 1-F21 epitope concentration in synovial fluid early after anterior cruciate ligament injury is associated with worse knee cartilage quality assessed by gadolinium enhanced magnetic resonance imaging 20 years later

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Paul Neuman ◽  
Staffan Larsson ◽  
L. Stefan Lohmander ◽  
André Struglics
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Synovial Fluid ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Resonance Imaging ◽  
Knee Cartilage ◽  
Knee Oa ◽  
Anterior Cruciate

Abstract Background To investigate if cartilage related biomarkers in synovial fluid are associated with knee cartilage status 20 years after an anterior cruciate ligament (ACL) injury. Methods We studied 25 patients with a complete ACL rupture without subsequent ACL reconstruction or radiographic knee OA. All had a delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) 20 years after the ACL injury, using the T1 transverse relaxation time in the presence of gadolinium (T1Gd) which estimates the concentration of glycosaminoglycans in hyaline cartilage. Synovial fluid samples were aspirated acutely (between 0 and 18 days) and during 1 to 5 follow up visits between 0.5 and 7.5 years after injury. We quantified synovial fluid concentrations of aggrecan (epitopes 1-F21 and ARGS), cartilage oligomeric matrix protein, matrix metalloproteinase-3 and tissue inhibitor of metalloproteinase-1 by immunoassays, and sulfated glycosaminoglycans by Alcian blue precipitation. Western blot was used for qualitative analyses of aggrecan fragments in synovial fluid and cartilage samples. Results Western blot indicated that the 1-F21 epitope was located within the chondroitin sulfate 2 region of aggrecan. Linear regression analyses (adjusted for age, sex, body mass index and time between injury and sampling) showed that acute higher synovial fluid 1-F21-aggrecan concentrations were associated with shorter T1Gd values 20 years after injury, i.e. inferior cartilage quality (standardized effects between − 0.67 and − 1.0). No other statistically significant association was found between molecular biomarkers and T1Gd values. Conclusion Higher acute synovial fluid 1-F21-aggrecan concentrations in ACL injured patients, who managed to cope without ACL reconstruction and were without radiographic knee OA, were associated with inferior knee cartilage quality assessed by dGEMRIC 20 years after injury.

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