Johnston, James - University of Saskatchewan - Department of Biomedical Engineering

个人简介

J.D. Johnston joined the Mechanical Engineering Department at the U of S in 2008 while finishing his PhD at the University of British Columbia. He had previously received his BSc(Eng) in Mechanical Engineering from the University of New Brunswick in 1999 and his MSc(Eng) in Mechanical Engineering from Queen's University in 2001. Between his MSc and PhD he spent 3 years at the Institute of Orthopedic Research and Education in Houston, Texas as a biomedical research engineer.

研究领域

J.D. Johnston's research interests are in the area of orthopaedic biomechanics and musculoskeletal medical imaging. His primary interest is in the usage of mechanical means (mechanical testing, finite element analyses, kinematic/kinetic motion analyses) and quantitative imaging tools (CT, MRI, synchrotron radiography) to investigate links between mechanics and disease processes: particularly osteoarthritis and osteoporosis. Additional interests pertain to joint replacements; the end result of osteoarthritis. Past investigations have focused on biomechanical studies of the hip, knee and spine which led towards the development of novel implant designs.

近期论文

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Johnston JD, Burnett W, Kontulainen S (2016). Subchondral bone traits, morphology and mechanical properties as biomarkers of osteoarthritis onset and severity. In: Biomarkers in Disease: Methods, Discoveries and Applications. Biomarkers in Bone Disease. Preedy V & Patel V eds. London: Springer. Cooper DML, Kawalilak CE, Harrison K, Johnston JD (2016). Cortical Bone Porosity: What is it, why is it important and how can we detect it? Current Osteoporosis Reports 3: 3. Kawalilak C, Kontulainen S, Amini M, Lanovaz JL, Wojciech P, Olszynski MD, Johnston JD (2016). In vivo precision of three HR-pQCT-derived finite element models of the distal radius and tibia in postmenopausal women. BMC Musculoskeletal Disorders. (Accepted: August 2016) Nazemi M, Cooper DML, Johnston JD (2016). Quantifying trabecular bone material anisotropy and orientation using low resolution clinical CT images: A feasibility study. Medical Engineering & Physics. (eTOC: June 2016). Available online at: www.ncbi.nlm.nih.gov/pubmed/27372175 Burnett WD, Kontulainen SA, McLennan CE, Hazel D, Talmo C, Wilson DR, Hunter DJ, Johnston JD (2016). Patella bone density is lower in knee osteoarthritis patients experiencing moderate-to-severe pain at rest. J Musculoskelet Neuronal Interact. 16(1); 33-39. Available online at: http://www.ismni.org/jmni/pdf/63/V16I1_06BURNETT.pdf Kawalilak CE, Johnston JD, Cooper DM, Olszynski WP, Kontulainen SA (2016). Role of endocortical contouring methods on precision of HR-pQCT-derived cortical micro-architecture in postmenopausal women and young adults. Osteoporosis Int. 27(2); 789-96. Available online at: http://www.ncbi.nlm.nih.gov/pubmed/26252976 Rajabi A, Dolovich AT, Johnston JD (2015). From the rhombic transposition flap toward Z-plasty: An optimized design using the finite element method. Journal of Biomechanics. 48(13); 3681-7. Available online at: http://www.ncbi.nlm.nih.gov/pubmed/26341459 Burnett WD, Kontulainen SA, McLennan CE, Hazel D, Talmo C, Wilson DR, Hunter DJ, Johnston JD (2015). Response to Letter to the Editor: 'Is subchondral bone mineral density associated with nocturnal pain in knee osteoarthritis patients?’ Osteoarthritis and Cartilage. 23(12); 2299-301. Available online at: http://www.ncbi.nlm.nih.gov/pubmed/26162805 Crockett K, Arnold CM, Farthing JP, Chilibeck PD, Johnston JD, Bath B, Baxter-Jones ADG, Kontulainen SA (2015). Bone strength and muscle properties in postmenopausal women with and without a recent distal radius fracture. Osteoporosis Int. Accepted (04/2015). Frank-Wilson A, Johnston JD, Olszynski WP, Kontulainen SA (2015). Measurement of muscle and fat in postmenopausal women: precision of previously reported pQCT imaging methods. Bone. 75; 49-54. Available online at: www.ncbi.nlm.nih.gov/pubmed/25659205 Kawalilak CE, Johnston JD, Olszynski WP, Kontulainen SA (2015). Monitoring time interval for high resolution pQCT-derived bone outcomes in postmenopausal women. Journal of Musculoskeletal and Neuronal Interactions. Revision Submitted (02/2015). Burnett WD, Kontulainen SA, McLennan CE, Hazel D, Talmo C, Wilson DR, Hunter DJ, Johnston JD (2015). Proximal tibial bone density is altered in knee osteoarthritis patients experiencing severe nocturnal pain. Osteoarthritis and Cartilage. Accepted (04/2015). Available online at: http://dx.doi.org/10.1016/j.joca.2015.04.012. Amini M, Nazemi M, Lanovaz JL, Kontulainen SE, Masri BA, Wilson DR, Szyszkowski W, Johnston JD (2015). Individual and combined effects of OA-related subchondral bone alterations on proximal tibial surface surface stiffness: A Parametric Finite Element Modeling Study. Medical Engineering and Physics. Revision Submitted (02/2015). Nazemi M, Amini M, Kontulainen SA, Milner J, Holdsworth DW, Masri BA, Wilson DR, Johnston JD (2015). Prediction of local proximal tibial subchondral bone structural stiffness using subject-specific finite element modeling: Effect of selected density-modulus relationship. Clinical Biomechanics. Revision Submitted (02/2015). Tulloch P, Johnston JD, Barber S, Gellert C, Lang, Panizzi L (2014). In vitro Evaluation of Carpal Fexion in the Horse after Partial Carpal Arthrodesis. Veterinary Surgery. Accepted: September/2014. Available online at: http://onlinelibrary.wiley.com/doi/10.1111/j.1532-950X.2014.12299.x/abstract Kawalilak CE, Lanovaz JL, Johnston JD, Kontulainen SA (2014). Linearity and sex-specificity of impact force prediction during a fall onto the outstretched hand using a single-damper-model. J Musculoskelet Neuronal Interact. 14(3). 286-93. Available online at: www.ncbi.nlm.nih.gov/pubmed/25198223 Kawalilak CE, Johnston JD, Olszynski WP, Kontulainen SA (2014). Characterizing microarchitectural changes at the distal radius and tibia in postmenopausal women using HR-pQCT. Osteoporos Int. 25(8); 2057-66. Available online at: www.ncbi.nlm.nih.gov/pubmed/24781379 Johnston JD, Liao L, Dolovich AT, Leswick DA, Kontulainen SA (2014). Magnetic resonance imaging of bone and muscle traits at the hip: an in vivo precision study. J Musculoskelet Neuronal Interact. 14(1); 104-10. www.ncbi.nlm.nih.gov/pubmed/24583545 Burnett WE, Kontulainen SA, McLennan CE, Hunter DJ, Wilson DR, Johnston JD (2014). Regional depth-specific subchondral bone density measures in osteoarthritic and normal patellae: in vivo precision and preliminary comparisons. Osteoporos Int. 25(3); 1107-14. Available online at: www.ncbi.nlm.nih.gov/pubmed/24221452 Celebrini R, Eng J, Miller W, Ekegran C, Johnston JD, Depew T, MacIntyre D (2014). Effect of a novel movement strategy in decreasing ACL risk factors in female adolescent soccer players: a randomized controlled trial. Clin J Sport Med. 24(2); 134-41. Available online at: www.ncbi.nlm.nih.gov/pubmed/24184850 Kawalilak CE, Johnston JD, Olszynski WP, Leswick DA, Kontulainen SA (2013). Comparison of Short-Term In Vivo Precision of Bone Density and Microarchitecture at the Distal Radius and Tibia Between Postmenopausal Women and Young Adults. J Clin Densitom. 17(4); 510-7. Available online at: www.ncbi.nlm.nih.gov/pubmed/24206866 Duckham R, Baxter-Jones A, Johnston JD, Vatanparast H, Cooper D, Kontulainen SA (2013). Does physical activity in adolescence have site and sex specific benefits on young adult bone size, content and estimated strength? Journal of Bone and Mineral Research. 29(2); 479-86. Available online at: www.ncbi.nlm.nih.gov/pubmed/23907819 Duckham R, Frank A, Johnston JD, Olszyncki W, Kontulainen S (2013). Monitoring Time Interval for pQCT-derived bone outcomes in postmenopausal women. Osteoporosis International. 24(6); 1917-22. Available online at: http://www.ncbi.nlm.nih.gov/pubmed/23344257 Kontulainen SA, Johnston JD (2013). Bone acquisition/pediatric bone: Meeting Report from the 34rd Annual Meeting of the American Society for Bone and Mineral Research. IMBS Bone Key. 10(261). Plesman R, Sharma A, Gilbert P, Campbell J, Johnston JD, Schmon C, Linn K (2012). Radiographic landmarks for measurement of cranial tibial subluxation in the canine cruciate ligament deficient stifle. Veterinary Comparative Orthopedics and Traumatology. 25(6); 478-87. Available online at: http://www.ncbi.nlm.nih.gov/pubmed/22828667