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Vos, P.A.J.M. (author), Degroot, J. (author), Barten-Van Rijbroek, A.D. (author), Zuurmond, A.-M. (author), Bijlsma, J.W.J. (author), Mastbergen, S.C. (author), Lafeber, F.P.J.G. (author)Osteoarthritis is a highly prevalent disease, age being the main risk factor. The age-related accumulation of advanced-glycation-endproducts (AGEs) adversely affects the mechanical and biochemical properties of cartilage. The hypothesis that accumulation of cartilage AGEs in combination with surgically induced damage predisposes to the...article 2012
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Dunias, P. (author), Gransier, R. (author), Jin, A. (author), Statham, A. (author), Willems, P. (author)In many medical applications, especially the orthopaedic setting, ambulatory, monitoring of human joint angles could be of substantial value to improving rehabilitation strategies and unravelling the pathomechanics of many degenerative joint diseases (e.g. knee osteoarthritis). With the ageing of the population and increasing incidence of...conference paper 2011
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Vlaskamp, F. (author), Cremers, G. (author), Pas, R. (author), Arts, C. (author), Bonroy, B. (author), Gransier, R. (author), Kalisvaart, S.H. (author), Kerkhofs, V. (author), Koomen, P. (author), van Lummel, R. (author), Meijer, K. (author), Sauren, H. (author), Swinkels, M. (author), Vanrumste, B. (author), Verschuren, G. (author), de Witte, L. (author)Objective. People use pedometers and sport watches to measure calorie use and training performance. Knowing "how you move" is often more important than knowing "how much you move". Measuring "how you move" and feedback to the user is the objective of the BioSensing project. Patients with osteoarthritis of the knee and patients with acute knee...bookPart 2011
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Jans, M.P. (author), Slootweg, V.C. (author), Boot, C.R. (author), de Morton, N.A. (author), van der Sluis, G. (author), van Meeteren, N.L. (author)Objective: To examine the reproducibility, construct validity, and unidimensionality of the Dutch translation of the de Morton Mobility Index (DEMMI), a performance-based measure of mobility for older patients. Design: Cross-sectional study. Setting: Rehabilitation center (reproducibility study) and hospital (validity study). Participants:...article 2011
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Klein-Wieringa, I.R. (author), Kloppenburg, M. (author), Bastiaansen-Jenniskens, Y.M. (author), Yusuf, E. (author), Kwekkeboom, J.C. (author), El-Bannoudi, H. (author), Nelissen, R.G.H.H. (author), Zuurmond, A. (author), Stojanovic-Susulic, V. (author), van Osch, G.J.V.M. (author), Toes, R.E.M. (author), Ioan-Facsinay, A. (author)Objectives: Obesity is a risk factor for the development of osteoarthritis (OA) in hands and knees. Adipose tissue can secrete different adipokines with powerful immunomodulatory effects. The infrapatellar fat pad (IFP) is an intra-articular organ in the vicinity of the synovium and cartilage. It is hypothesised that IFP-derived soluble factors...article 2011
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Vos, P.A.J.M. (author), de Groot, J. (author), Huisman, A.M. (author), Oostveen, J.C.M. (author), Marijnissen, A.C.A. (author), Bijlsma, J.W.J. (author), van El, B. (author), Zuurmond, A.M. (author), Lafeber, F.P.J.G. (author), TNO Kwaliteit van Leven (author)Objectives: Age-related changes in articular cartilage are likely to play a role in the aetiology of osteoarthritis (OA). One of the major age-related changes in cartilage is the accumulation of advanced-glycation-endproducts (AGEs). Since, cartilage tissue is not readily available from patients for studying AGE levels, alternative approaches...article 2010
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van Spil, W.E. (author), de Groot, J. (author), Lems, W.F. (author), Oostveen, J.C.M. (author), Lafeber, F.P.J.G. (author), TNO Kwaliteit van Leven (author)Context: Molecules that are released into biological fluids during matrix metabolism of articular cartilage, subchondral bone, and synovial tissue could serve as biochemical markers of the process of osteoarthritis (OA). Unfortunately, actual breakthroughs in the biochemical OA marker field are limited so far. Objective: By reviewing the status...article 2010
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Vos, P. (author), Intema, F. (author), van El, B. (author), de Groot, J. (author), Bijlsma, J.W.J. (author), Lafeber, F. (author), Mastbergen, S. (author), TNO Kwaliteit van Leven (author)Many animal models are used to study osteoarthritis (OA). In these models the role of joint loading in the development of OA is not fully understood. We studied the effect of loading on the development of OA in the canine Groove-model. In ten female beagle dogs OA was induced in one knee according to the Groove-model. The animals were divided in...article 2009
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Frost-Christensen, L.N. (author), Mastbergen, S.C. (author), Vianen, M.E. (author), Hartog, A. (author), de Groot, J. (author), Voorhout, G. (author), van Wees, A.M.C. (author), Lafeber, F.P.J.G. (author), Hazewinkel, H.A.W. (author), TNO Kwaliteit van Leven (author)Objective: The most used model for joint instability is the canine anterior cruciate ligament transection (ACLT)-model. The ACLT-model can be extended with a medial meniscectomy (MX) (i.e., ACLT-MX-model) to avoid unintentional, and with that variable, meniscal damage. The present study compares the ACLT-MX-model with the more recently...article 2008
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Intema, F. (author), de Groot, J. (author), Elshof, B. (author), Vianen, M.E. (author), Yocum, S. (author), Zuurmond, A. (author), Mastbergen, S.C. (author), Lafeber, F.P. (author), TNO Kwaliteit van Leven (author)In studies aimed at local treatment of experimental osteoarthritis (OA) it is optimal to have an internal (untreated) OA control. Such an approach excludes interanimal variation, and allows paired statistical evaluation of treatment efficacy. For this purpose, we developed and characterized a bilateral version of the canine Groove model. We...article 2008
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TNO Kwaliteit van Leven (author), Hunter, D.J. (author), LaValley, M. (author), Li, J. (author), Bauer, D.C. (author), Nevitt, M. (author), de Groot, J. (author), Poole, R. (author), Eyre, D. (author), Guermazi, A. (author), Gale, D. (author), Totterman, S. (author), Felson, D.T. (author)Introduction: Our objective was to determine whether markers of bone resorption and formation could serve as markers for the presence of bone marrow lesions (BMLs). Methods: We conducted an analysis of data from the Boston Osteoarthritis of the Knee Study (BOKS). Knee magnetic resonance images were scored for BMLs using a semiquantitative...article 2008
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Meulenbelt, I. (author), Kloppenburg, M. (author), Kroon, H.M. (author), Houwing-Duistermaat, J.J. (author), Garnero, P. (author), Hellio-Le Graverand, M.-P. (author), de Groot, J. (author), Slagboom, P.E. (author), TNO Kwaliteit van Leven (author)Objective: To assess the relationship of biochemical markers and radiographic signs of osteoarthritis (ROA) in the subjects with symptomatic osteoarthritis (OA) at multiple sites of the Genetics osteoARthritis and Progression (GARP) study. Methods: We have measured eight biochemical markers, representing tissue turnover of cartilage, bone,...article 2007
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Hunter, D.J. (author), Li, J. (author), LaValley, M. (author), Bauer, D.C. (author), Nevitt, M. (author), de Groot, J. (author), Poole, R. (author), Eyre, D. (author), Guermazi, A. (author), Gale, D. (author), Felson, D.T. (author), TNO Kwaliteit van Leven (author)We used data from a longitudinal observation study to determine whether markers of cartilage turnover could serve as predictors of cartilage loss on magnetic resonance imaging (MRI). We conducted a study of data from the Boston Osteoarthritis of the Knee Study (BOKS), a completed natural history study of knee osteoarthritis (OA). All subjects in...article 2007
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Hunter, D.J. (author), LaValley, M. (author), Li, J. (author), Zhang, Y. (author), Bauer, D. (author), Nevitt, M. (author), Guermazi, A. (author), de Groot, J. (author), Sakkee, N. (author), Gale, D. (author), Felson, D.T. (author), TNO Kwaliteit van Leven (author)Objective: Age-related changes in articular cartilage are likely to play a role in the etiology of osteoarthritis (OA). One of the major changes in the extracellular matrix of cartilage is the age-related accumulation of advanced glycation end products (AGEs). Pentosidine, an AGE crosslink, is one of the few characterized AGEs and is considered...article 2007
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TNO Kwaliteit van Leven (author), Meulenbelt, I. (author), Kloppenburg, M. (author), Kroon, H.M. (author), Houwing-Duistermaat, J.J. (author), Garnero, P. (author), Hellio Le Graverand, M.P. (author), de Groot, J. (author), Slagboom, P.E. (author)Objective: To assess the relation between the urinary concentrations of type II collagen C-telopeptide (UCTX-II) and radiographie signs of osteoarthritis (ROA) in the GARP (Genetics, Arthrosis and Progression) study. Methods: UCTX-II levels were measured in GARP study participants, who are sibling pairs predominantly with symptomatic...article 2006
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TNO Kwaliteit van Leven (author), Uitterlinden, E.J. (author), Jahr, H. (author), Koevoet, J.L.M. (author), Jenniskens, Y.M. (author), Bierma-Zeinstra, S.M.A. (author), de Groot, J. (author), Verhaar, J.A.N. (author), Weinans, H. (author), van Osch, G.J.V.M. (author)Objective: To investigate the effect of glucosamine (GlcN) in a human osteoarthritic explant model on expression of genes involved in anabolic and catabolic activities of chondrocytes. Methods: Human osteoarthritic explants, obtained during knee arthroplasty surgery, were pre-cultured (3 days) and treated with glucosamine-hydrochloride (GlcN-HCl...article 2006
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Boshuizen, H.C. (author), Stemmerik, L. (author), Westhoff, M.H. (author), Hopman-Rock, M. (author), TNO Kwaliteit van Leven (author)Elderly participants experiencing difficulty in chair rising and with a maximum knee-extensor torque below 87.5 N · m were randomized to different versions of a strength-training program for the knee-extensors: to a high-guidance group (HG; two group sessions supervised by a physical therapist and one unsupervised home session per week, n = 17),...article 2005
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Heuts, P.H.T.G. (author), de Bie, R. (author), Drietelaar, M. (author), Aretz, K. (author), Hopman-Rock, M. (author), Bastiaenen, C.H.G. (author), Metsemakers, J.F.M. (author), van Weel, C. (author), van Schayck, O.C.P. (author), TNO Preventie en Gezondheid (author)Objective. To assess in a primary healthcare setting the efficacy of a self-management program in middle-aged patients with osteoarthritis (OA). Methods. This was a 2-group randomized controlled trial, with 273 patients aged 40 to 60 years with OA of the hip(s) and/or knee(s). The experimental intervention was compared with care-as-usual....article 2005
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Lamers, R.J.A.N. (author), van Nesselrooij, J.H.J. (author), Kraus, V.B. (author), Jordan, J.M. (author), Renner, J.B. (author), Dragomir, A.D. (author), Luta, G. (author), van der Greef, J. (author), de Groot, J. (author), TNO Kwaliteit van Leven (author)Objective: Osteoarthritis (OA) is one of the most common diseases among the elderly. The main characteristic is the progressive destruction of articular cartilage. We lack quantitative and sensitive biomarkers for OA to detect changes in the joints in an early stage of the disease. In this study, we investigated whether a urinary metabolite...article 2005
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Hoozemans, M.J.M. (author), de Looze, M.P. (author), Kingma, I. (author), Reijneveld, K.C.N. (author), de Korte, E.M. (author), van der Grinten, M.P. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)The objective of the present study was to compare energetic workload, perceived exertion, perceived discomfort, safety, and mechanical load at lower limb joints among window cleaners during usage of extension ladders with 30 and 35 cm rung separation. Eleven healthy male professional window cleaners of short and tall stature participated in this...article 2005