Search Results - "Töyräs, J"

Importance of depth-wise distribution of collagen and proteoglycans in articular cartilage—A 3D finite element study of stresses and strains in human knee joint by Halonen, K S, Mononen, M E, Jurvelin, J S, Töyräs, J, Korhonen, R K

“…Abstract Proteoglycans and collagen fibrils are distributed inhomogeneously throughout the depth of articular cartilage, providing the tissue with its unique…”
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New method for point-of-care osteoporosis screening and diagnostics by Karjalainen, J. P., Riekkinen, O., Töyräs, J., Jurvelin, J. S., Kröger, H.

“…Summary Due to the lack of diagnostics in primary health care, over 75 % of osteoporotic patients are not diagnosed. A new ultrasound method for primary health…”
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Near-infrared spectroscopy enables quantitative evaluation of human cartilage biomechanical properties during arthroscopy by Prakash, M., Joukainen, A., Torniainen, J., Honkanen, M.K.M., Rieppo, L., Afara, I.O., Kröger, H., Töyräs, J., Sarin, J.K.

“…To investigate the feasibility of near-infrared (NIR) spectroscopy (NIRS) for evaluation of human articular cartilage biomechanical properties during…”
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Detection of mechanical injury of articular cartilage using contrast enhanced computed tomography by Kokkonen, H.T, Jurvelin, J.S, Tiitu, V, Töyräs, J

“…Summary Objective Osteoarthritic degeneration may be initiated by mechanical overloading of articular cartilage. Mechanical injury increases the permeability…”
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pQCT study on diffusion and equilibrium distribution of iodinated anionic contrast agent in human articular cartilage – associations to matrix composition and integrity by Silvast, T.S., B.S, Jurvelin, J.S., Ph.D, Lammi, M.J., Ph.D, Töyräs, J., Ph.D

“…Summary Objective X-ray imaging of articular cartilage using anionic contrast agents has been introduced for quantification of tissue glycosaminoglycan (GAG)…”
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Polysomnographic characteristics of severe obstructive sleep apnea vary significantly between hypertensive and normotensive patients of both genders by Leppänen, T., Kulkas, A., Töyräs, J., Myllymaa, S., Gadoth, N., Oksenberg, A.

“…Purpose Hypertension is a common finding in patients with obstructive sleep apnea (OSA), but it has remained unclear whether or not the amount of disturbed…”
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Multi-site bone ultrasound measurements in elderly women with and without previous hip fractures by Karjalainen, J. P., Riekkinen, O., Töyräs, J., Hakulinen, M., Kröger, H., Rikkonen, T., Salovaara, K., Jurvelin, J. S.

“…Summary About 75% of patients suffering from osteoporosis are not diagnosed. This study describes a multi-site bone ultrasound method for osteoporosis…”
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T2 and quantitative susceptibility mapping in an equine model of post-traumatic osteoarthritis: assessment of mechanical and structural properties of articular cartilage by Nykänen, O., Sarin, J.K., Ketola, J.H., Leskinen, H., te Moller, N.C.R., Tiitu, V., Mancini, I.A.D., Visser, J., Brommer, H., van Weeren, P.R., Malda, J., Töyräs, J., Nissi, M.J.

“…To investigate the potential of quantitative susceptibility mapping (QSM) and T2* relaxation time mapping to determine mechanical and structural properties of…”
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Thermal imaging in screening of joint inflammation and rheumatoid arthritis in children by Lasanen, R, Piippo-Savolainen, E, Remes-Pakarinen, T, Kröger, L, Heikkilä, A, Julkunen, P, Karhu, J, Töyräs, J

“…Potential of modern thermal imaging for screening and differentiation of joint inflammation has not been assessed in child and juvenile patient populations,…”
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Adjustment of apnea-hypopnea index with severity of obstruction events enhances detection of sleep apnea patients with the highest risk of severe health consequences by Muraja-Murro, A., Kulkas, A., Hiltunen, M., Kupari, S., Hukkanen, T., Tiihonen, P., Mervaala, E., Töyräs, J.

“…Introduction Presently, the severity of obstructive sleep apnea (OSA) is estimated based on the apnea-hypopnea index (AHI). Unfortunately, AHI does not provide…”
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Comparison of water, hydroxyproline, uronic acid and elastin contents of bovine knee ligaments and patellar tendon and their relationships with biomechanical properties by Ristaniemi, A., Torniainen, J., Stenroth, L., Finnilä, M.A.J., Paakkonen, T., Töyräs, J., Korhonen, R.K.

“…Mechanical material properties of ligaments originate from their biochemical composition and structural organization. However, it is not yet fully elucidated…”
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Alterations in structure and properties of collagen network of osteoarthritic and repaired cartilage modify knee joint stresses by Mononen, M. E., Julkunen, P., Töyräs, J., Jurvelin, J. S., Kiviranta, I., Korhonen, R. K.

“…Organization of the collagen network is known to be different in healthy, osteoarthritic and repaired cartilage. The aim of the study was to investigate how…”
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Indentation diagnostics of cartilage degeneration by Kiviranta, P., B.M, Lammentausta, E., Ph.D, Töyräs, J., Ph.D, Kiviranta, I., M.D., Ph.D, Jurvelin, J.S., Ph.D

“…Summary Objective Mechanical indentation and ultrasound (US) indentation instruments have been introduced for quantitative assessment of cartilage properties…”
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Ultrasound backscatter measurements of intact human proximal femurs—Relationships of ultrasound parameters with tissue structure and mineral density by Malo, M.K.H, Töyräs, J, Karjalainen, J.P, Isaksson, H, Riekkinen, O, Jurvelin, J.S

“…Abstract Ultrasound reflection and backscatter parameters are related to the mechanical and structural properties of bone in vitro . However, the potential of…”
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Effect of porosity, tissue density, and mechanical properties on radial sound speed in human cortical bone by Eneh, C. T. M., Malo, M. K. H., Karjalainen, J. P., Liukkonen, J., Töyräs, J., Jurvelin, J. S.

“…Purpose: The purpose of this study was to investigate the effect of simultaneous changes in cortical porosity, tissue mineral density, and elastic properties…”
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Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation by Korhonen, R.K, Laasanen, M.S, Töyräs, J, Rieppo, J, Hirvonen, J, Helminen, H.J, Jurvelin, J.S

“…At mechanical equilibrium, articular cartilage is usually characterized as an isotropic elastic material with no interstitial fluid flow. In this study, the…”
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Transport of Iodine Is Different in Cartilage and Meniscus by Honkanen, J. T. J., Turunen, M. J., Tiitu, V., Jurvelin, J. S., Töyräs, J.

“…Contrast enhanced computed tomography (CECT) has been proposed for diagnostics of cartilage and meniscus injuries and degeneration. As both tissues may be…”
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Structural parameters of normal and osteoporotic human trabecular bone are affected differently by microCT image resolution by Isaksson, H, Töyräs, J, Hakulinen, M, Aula, A. S, Tamminen, I, Julkunen, P, Kröger, H, Jurvelin, J. S

“…Summary This study employed microCT to investigate whether image resolution affects bone structural parameters differently in healthy normal and osteoporotic…”
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Contrast agent enhanced pQCT of articular cartilage by Kallioniemi, A S, Jurvelin, J S, Nieminen, M T, Lammi, M J, Töyräs, J

“…The delayed gadolinium enhanced MRI of cartilage (dGEMRIC) technique is the only non-invasive means to estimate proteoglycan (PG) content in articular…”
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Contrast agent-enhanced computed tomography of articular cartilage: association with tissue composition and properties by Silvast, T S, Jurvelin, J S, Aula, A S, Lammi, M J, Töyräs, J

“…Contrast agent-enhanced computed tomography may enable the noninvasive quantification of glycosaminoglycan (GAG) content of articular cartilage. It has been…”
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