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MR Imaging of Degenerative Cartilage Lesions of the Knee Joint in Floor Layers and Graphic Designers

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@article{c2900b57017247a4829207d35c4dcb13,
title = "MR Imaging of Degenerative Cartilage Lesions of the Knee Joint in Floor Layers and Graphic Designers",
abstract = "Introduction: Kneeling work leads to an additional risk ofdeveloping knee osteoarthritis (OA). Previous studies haveprimarily been based on radiography, but radiography is limitedby its inability to visualize articular cartilage, in which the earliestsigns of OA occur. The objective of this explorative study, basedon available data, was to examine the prevalence of magneticresonance imaging (MRI)-detected knee cartilage lesions in malefloor layers exposed to kneeling work, as compared to non-exposedmale graphic designers.Methods: MRI of the knees was conducted in 92 floor layers and49 graphic designers, with a mean age of 55.6 years (42-70 years).MRI-detected cartilage lesions were graded according to a ninepointlesion scale using a modified Whole Organ Resonance Score(WORMS) system. Severe knee cartilage lesions were defined asa maximal lesion score ≥ 3 in 1) the medial tibiofemoral posteriorarea, the most strained area during kneeling and 2) the total knee.Presence of lesions was compared in floor layers and graphicdesigners after adjusting for age, BMI, seniority, knee injuries, andsports activity in logistic regression analyses for correlated data,and investigated as a risk factor for self-reported knee complaintsin ordinary logistic regression analyses.Results: The prevalence of MRI-detected knee cartilage lesionsdid not differ between the two occupations in the tibiofemoralmedial posterior area of the knee (p ≥ 0.50), or in the total knee (p ≥0.29). For the two study groups combined, age showed a five-foldincrease in the odds of cartilage lesions per 10 years{\textquoteright} difference inage, and presence of cartilage lesions was associated with a 2.5-fold increase in the odds of self-reported knee complaints.Conclusions: In contrast to our expectations, MRI-detectableknee cartilage lesions were not more prevalent among workerswith knee-demanding work. This calls for further research that canclarify the mechanisms that causes knee OA in occupations withknee-demanding work.",
author = "S{\o}ren Rytter and Thomsen, {Birthe Lykke} and Christensen, {Birgitte Sch{\"u}tt} and Lilli Kirkeskov",
year = "2016",
month = sep,
day = "21",
language = "English",
volume = "2",
journal = "Journal of Rheumatic Diseases and Treatment",
issn = "2469-5726",
publisher = "ClinMed International Library",
number = "3",

}

RIS

TY - JOUR

T1 - MR Imaging of Degenerative Cartilage Lesions of the Knee Joint in Floor Layers and Graphic Designers

AU - Rytter, Søren

AU - Thomsen, Birthe Lykke

AU - Christensen, Birgitte Schütt

AU - Kirkeskov, Lilli

PY - 2016/9/21

Y1 - 2016/9/21

N2 - Introduction: Kneeling work leads to an additional risk ofdeveloping knee osteoarthritis (OA). Previous studies haveprimarily been based on radiography, but radiography is limitedby its inability to visualize articular cartilage, in which the earliestsigns of OA occur. The objective of this explorative study, basedon available data, was to examine the prevalence of magneticresonance imaging (MRI)-detected knee cartilage lesions in malefloor layers exposed to kneeling work, as compared to non-exposedmale graphic designers.Methods: MRI of the knees was conducted in 92 floor layers and49 graphic designers, with a mean age of 55.6 years (42-70 years).MRI-detected cartilage lesions were graded according to a ninepointlesion scale using a modified Whole Organ Resonance Score(WORMS) system. Severe knee cartilage lesions were defined asa maximal lesion score ≥ 3 in 1) the medial tibiofemoral posteriorarea, the most strained area during kneeling and 2) the total knee.Presence of lesions was compared in floor layers and graphicdesigners after adjusting for age, BMI, seniority, knee injuries, andsports activity in logistic regression analyses for correlated data,and investigated as a risk factor for self-reported knee complaintsin ordinary logistic regression analyses.Results: The prevalence of MRI-detected knee cartilage lesionsdid not differ between the two occupations in the tibiofemoralmedial posterior area of the knee (p ≥ 0.50), or in the total knee (p ≥0.29). For the two study groups combined, age showed a five-foldincrease in the odds of cartilage lesions per 10 years’ difference inage, and presence of cartilage lesions was associated with a 2.5-fold increase in the odds of self-reported knee complaints.Conclusions: In contrast to our expectations, MRI-detectableknee cartilage lesions were not more prevalent among workerswith knee-demanding work. This calls for further research that canclarify the mechanisms that causes knee OA in occupations withknee-demanding work.

AB - Introduction: Kneeling work leads to an additional risk ofdeveloping knee osteoarthritis (OA). Previous studies haveprimarily been based on radiography, but radiography is limitedby its inability to visualize articular cartilage, in which the earliestsigns of OA occur. The objective of this explorative study, basedon available data, was to examine the prevalence of magneticresonance imaging (MRI)-detected knee cartilage lesions in malefloor layers exposed to kneeling work, as compared to non-exposedmale graphic designers.Methods: MRI of the knees was conducted in 92 floor layers and49 graphic designers, with a mean age of 55.6 years (42-70 years).MRI-detected cartilage lesions were graded according to a ninepointlesion scale using a modified Whole Organ Resonance Score(WORMS) system. Severe knee cartilage lesions were defined asa maximal lesion score ≥ 3 in 1) the medial tibiofemoral posteriorarea, the most strained area during kneeling and 2) the total knee.Presence of lesions was compared in floor layers and graphicdesigners after adjusting for age, BMI, seniority, knee injuries, andsports activity in logistic regression analyses for correlated data,and investigated as a risk factor for self-reported knee complaintsin ordinary logistic regression analyses.Results: The prevalence of MRI-detected knee cartilage lesionsdid not differ between the two occupations in the tibiofemoralmedial posterior area of the knee (p ≥ 0.50), or in the total knee (p ≥0.29). For the two study groups combined, age showed a five-foldincrease in the odds of cartilage lesions per 10 years’ difference inage, and presence of cartilage lesions was associated with a 2.5-fold increase in the odds of self-reported knee complaints.Conclusions: In contrast to our expectations, MRI-detectableknee cartilage lesions were not more prevalent among workerswith knee-demanding work. This calls for further research that canclarify the mechanisms that causes knee OA in occupations withknee-demanding work.

M3 - Journal article

VL - 2

JO - Journal of Rheumatic Diseases and Treatment

JF - Journal of Rheumatic Diseases and Treatment

SN - 2469-5726

IS - 3

M1 - 040

ER -

ID: 49207253