Group overview

Personal profiles

Group leaders

Post Doc researchers

Ph.D. Students

Laboratory engineer

Active Collaborators

Emeritus and Emerita members

Research Group

Rami Kristian Korhonen

Professor, Co-head of the BBC group
University of Eastern Finland

Personal information

  • Phone: +358 04 3553260
  • Room: Sn/3131/2
  • Email: rami.korhonen [at] (please fix the address before mailing!)

  • Date of birth: 22 November 1975

  • Current research interests: Biomechanical modeling of articular cartilage: collagen viscoelasticity, compression-tension nonlinearity; chondrocyte mechanics using experimental and theoretical approaches; modeling of total hip replacement prostheses; confocal scanning microscopic imaging of chondrocytes; magnetic resonance imaging of cartilage; diagnostics of osteoarthritis

  • Previous research experience: Assistant Researcher 6 months, Assistant Physicist 17 months, Project Researcher 17 months, Researcher 13 months, Post Doctoral Researcher 3 years, Academy Research Fellow 5 years, Assistant Professor 3 years

  • Education: MSc 2000 (Medical Physics), University of Kuopio; PhD 2004 (Physics), University of Kuopio.

  • Most important foreign visits: Dr. Walter Herzog's group, University of Calgary, Canada, September 2005 - November 2007

  • Skills: Finite element software Abaqus, Matlab programming, Modeling of material characteristics

  • Hobbies: Gym, football, badminton, bandy, tennis

  • Awards:
    • The Perkins Prize 2003: for best paper published in Medical Engineering & Physics in 2002.
    • Finalist in the CSB2006 (Canadian Society for Biomechanics) NDI Young Investigator Award Open Category Competition.

  • Reviews for scientific journals
    • Journal of Biomechanics
    • Journal of Biomechanical Engineering
    • Arthritis & Rheumatism
    • Proceedings of the Royal Society A
    • Acta Orthopaedica
    • Acta Biomaterialia
    • Medical Engineering & Physics
    • Biomechanics and Modeling in Mechanobiology
    • Physiological Measurement
    • Microfluidics and Nanofluidics
    • Osteoarthritis and Cartilage
    • Journal of Orthopedic Research
    • Computer Methods and Programs in Biomedicine
    • etc.

Latest 50 publications:

  1. Ojanen SP, Finnila MAJ, Makela JTA, Saarela K, Happonen E, Herzog W, Saarakkala S and Korhonen RK. Anterior cruciate ligament transection of rabbits alters composition, structure and biomechanics of articular cartilage and chondrocyte deformation 2weeks post-surgery in a site-specific manner. J Biomech. 2020 Jan 2;98:109450. doi: 10.1016/j.jbiomech.2019.109450. Epub 2019

  2. Karhula SS, Finnila MAJ, Rytky SJO, Cooper DM, Thevenot J, Valkealahti M, Pritzker KPH, Haapea M, Joukainen A, Lehenkari P, Kroger H, Korhonen RK, Nieminen HJ and Saarakkala S. Quantifying Subresolution 3D Morphology of Bone with Clinical Computed Tomography. Ann Biomed Eng. 2020 Feb;48(2):595-605. doi: 10.1007/s10439-019-02374-2. Epub

  3. Bolcos PO, Mononen ME, Tanaka MS, Yang M, Suomalainen JS, Nissi MJ, Toyras J, Ma B, Li X and Korhonen RK. Identification of locations susceptible to osteoarthritis in patients with anterior cruciate ligament reconstruction: Combining knee joint computational modelling with follow-up T1rho and T2 imaging. Clin Biomech (Bristol, Avon). 2019 Aug 9. pii: S0268-0033(18)31029-5. doi:

  4. Tormalehto S, ORCID:, Aarnio E, Mononen ME, Arokoski JPA, Korhonen RK and Martikainen JA. Eight-year trajectories of changes in health-related quality of life in knee osteoarthritis: Data from the Osteoarthritis Initiative (OAI). PLoS One. 2019 Jul 19;14(7):e0219902. doi: 10.1371/journal.pone.0219902.

  5. Venalainen MS, Mononen ME, Salo J, Rasanen LP, Jurvelin JS, Toyras J, Viren T and Korhonen RK. Publisher Correction: Quantitative Evaluation of the Mechanical Risks Caused by Focal Cartilage Defects in the Knee. Sci Rep. 2019 Apr 4;9(1):5660. doi: 10.1038/s41598-019-41384-x.

  6. Mustonen AM, ORCID:, Kakela R, Finnila MAJ, Sawatsky A, Korhonen RK, Saarakkala S, Herzog W, Paakkonen T and Nieminen P. Anterior cruciate ligament transection alters the n-3/n-6 fatty acid balance in the lapine infrapatellar fat pad. Lipids Health Dis. 2019 Mar 18;18(1):67. doi: 10.1186/s12944-019-1008-5.

  7. Huang L, Korhonen RK, Turunen MJ and Finnila MAJ. Experimental mechanical strain measurement of tissues. PeerJ. 2019 Mar 7;7:e6545. doi: 10.7717/peerj.6545. eCollection 2019.

  8. Myller KAH, ORCID: 0000-0001-8820-1322, Korhonen RK, Toyras J, Salo J, Jurvelin JS and Venalainen MS. Computational evaluation of altered biomechanics related to articular cartilage lesions observed in vivo. J Orthop Res. 2019 May;37(5):1042-1051. doi: 10.1002/jor.24273. Epub 2019 Mar 28.

  9. Ebrahimi M, ORCID:, Ojanen S, Mohammadi A, Finnila MA, Joukainen A, Kroger H, Saarakkala S, Korhonen RK and Tanska P. Elastic, Viscoelastic and Fibril-Reinforced Poroelastic Material Properties of Healthy and Osteoarthritic Human Tibial Cartilage. Ann Biomed Eng. 2019 Apr;47(4):953-966. doi: 10.1007/s10439-019-02213-4. Epub

  10. Eskelinen ASA, Mononen ME, Venalainen MS, Korhonen RK and Tanska P. Maximum shear strain-based algorithm can predict proteoglycan loss in damaged articular cartilage. Biomech Model Mechanobiol. 2019 Jun;18(3):753-778. doi:

  11. Mononen ME, ORCID:, Liukkonen MK and Korhonen RK. Utilizing Atlas-Based Modeling to Predict Knee Joint Cartilage Degeneration: Data from the Osteoarthritis Initiative. Ann Biomed Eng. 2019 Mar;47(3):813-825. doi: 10.1007/s10439-018-02184-y. Epub

  12. Ronkainen AP, Tanska P, Fick JM, Herzog W and Korhonen RK. Interrelationship of cartilage composition and chondrocyte mechanics after a partial meniscectomy in the rabbit knee joint - Experimental and numerical analysis. J Biomech. 2019 Jan 23;83:65-75. doi: 10.1016/j.jbiomech.2018.11.024. Epub 2018

  13. Bolcos PO, ORCID:, Mononen ME, Mohammadi A, Ebrahimi M, Tanaka MS, Samaan MA, Souza RB, Li X, Suomalainen JS, Jurvelin JS, Toyras J and Korhonen RK. Comparison between kinetic and kinetic-kinematic driven knee joint finite element models. Sci Rep. 2018 Nov 26;8(1):17351. doi: 10.1038/s41598-018-35628-5.

  14. Ebrahimi M, Mohammadi A, Ristaniemi A, Stenroth L and Korhonen RK. The effect of different preconditioning protocols on repeatability of bovine ACL stress-relaxation response in tension. J Mech Behav Biomed Mater. 2019 Feb;90:493-501. doi: 10.1016/j.jmbbm.2018.10.041.

  15. Prittinen J, Ylarinne J, Piltti J, Karhula SS, Rieppo L, Ojanen SP, Korhonen RK, Saarakkala S, Lammi MJ and Qu C. Effect of centrifugal force on the development of articular neocartilage with bovine primary chondrocytes. Cell Tissue Res. 2019 Mar;375(3):629-639. doi: 10.1007/s00441-018-2938-3. Epub

  16. Orozco GA, Tanska P, ORCID:, Florea C, Grodzinsky AJ and Korhonen RK. A novel mechanobiological model can predict how physiologically relevant dynamic loading causes proteoglycan loss in mechanically injured articular cartilage. Sci Rep. 2018 Oct 22;8(1):15599. doi: 10.1038/s41598-018-33759-3.

  17. Torniainen J, ORCID:, Ristaniemi A, Sarin JK, Mikkonen S, ORCID:, Afara IO, ORCID:, Stenroth L, Korhonen RK and Toyras J. Near Infrared Spectroscopic Evaluation of Ligament and Tendon Biomechanical Properties. Ann Biomed Eng. 2019 Jan;47(1):213-222. doi: 10.1007/s10439-018-02125-9. Epub

  18. Ketola JH, Karhula SS, Finnila MAJ, ORCID: 0000-0002-3348-5759, Korhonen RK, Herzog W, Siltanen S, Nieminen MT and Saarakkala S. Iterative and discrete reconstruction in the evaluation of the rabbit model of osteoarthritis. Sci Rep. 2018 Aug 13;8(1):12051. doi: 10.1038/s41598-018-30334-8.

  19. Ristaniemi A, Stenroth L, Mikkonen S and Korhonen RK. Comparison of elastic, viscoelastic and failure tensile material properties of knee ligaments and patellar tendon. J Biomech. 2018 Oct 5;79:31-38. doi: 10.1016/j.jbiomech.2018.07.031. Epub 2018

  20. Tormalehto S, ORCID:, Mononen ME, Aarnio E, Arokoski JPA, Korhonen RK and Martikainen J. Health-related quality of life in relation to symptomatic and radiographic definitions of knee osteoarthritis: data from Osteoarthritis Initiative (OAI) 4-year follow-up study. Health Qual Life Outcomes. 2018 Jul 31;16(1):154. doi: 10.1186/s12955-018-0979-7.

  21. Danso EK, Julkunen P and Korhonen RK. Poisson's ratio of bovine meniscus determined combining unconfined and confined compression. J Biomech. 2018 Aug 22;77:233-237. doi: 10.1016/j.jbiomech.2018.07.001. Epub 2018

  22. Oinas J, Ronkainen AP, Rieppo L, Finnila MAJ, ORCID: 0000-0002-3348-5759, Iivarinen JT, van Weeren PR, Helminen HJ, Brama PAJ, Korhonen RK and Saarakkala S. Composition, structure and tensile biomechanical properties of equine articular cartilage during growth and maturation. Sci Rep. 2018 Jul 27;8(1):11357. doi: 10.1038/s41598-018-29655-5.

  23. Afara IO, ORCID: 0000-0001-7114-0439, Florea C, Olumegbon IA, Eneh CT, Malo MKH, ORCID: 0000-0002-2617-1129, Korhonen RK and Toyras J. Characterizing human subchondral bone properties using near-infrared (NIR) spectroscopy. Sci Rep. 2018 Jun 27;8(1):9733. doi: 10.1038/s41598-018-27786-3.

  24. Ojanen SP, ORCID: 0000-0003-4386-0716, Finnila MAJ, Reunamo AE, Ronkainen AP, Mikkonen S, Herzog W, Saarakkala S and Korhonen RK. Site-specific glycosaminoglycan content is better maintained in the pericellular matrix than the extracellular matrix in early post-traumatic osteoarthritis. PLoS One. 2018 Apr 25;13(4):e0196203. doi: 10.1371/journal.pone.0196203.

  25. Orozco GA, Tanska P, Mononen ME, Halonen KS and Korhonen RK. The effect of constitutive representations and structural constituents of ligaments on knee joint mechanics. Sci Rep. 2018 Feb 2;8(1):2323. doi: 10.1038/s41598-018-20739-w.

  26. Makela JTA, Cooper BG, Korhonen RK, Grinstaff MW and Snyder BD. Functional effects of an interpenetrating polymer network on articular cartilage mechanical properties. Osteoarthritis Cartilage. 2018 Mar;26(3):414-421. doi:

  27. Klets O, ORCID:, Mononen ME, Liukkonen MK, Nevalainen MT, Nieminen MT, Saarakkala S and Korhonen RK. Estimation of the Effect of Body Weight on the Development of Osteoarthritis Based on Cumulative Stresses in Cartilage: Data from the Osteoarthritis Initiative. Ann Biomed Eng. 2018 Feb;46(2):334-344. doi: 10.1007/s10439-017-1974-6. Epub 2017

  28. Ala-Myllymaki J, Danso EK, Honkanen JTJ, Korhonen RK, Toyras J and Afara IO. Optical spectroscopic characterization of human meniscus biomechanical properties. J Biomed Opt. 2017 Dec;22(12):1-10. doi: 10.1117/1.JBO.22.12.125008.

  29. Tanska P, ORCID:, Julkunen P and Korhonen RK. A computational algorithm to simulate disorganization of collagen network in injured articular cartilage. Biomech Model Mechanobiol. 2018 Jun;17(3):689-699. doi:

  30. Mononen ME, Tanska P, Isaksson H and Korhonen RK. New algorithm for simulation of proteoglycan loss and collagen degeneration in the knee joint: Data from the osteoarthritis initiative. J Orthop Res. 2018 Jun;36(6):1673-1683. doi: 10.1002/jor.23811. Epub 2017 Dec 19.

  31. Ojanen X, Tanska P, Malo MKH, Isaksson H, Vaananen SP, Koistinen AP, Grassi L, Magnusson SP, Ribel-Madsen SM, Korhonen RK, Jurvelin JS and Toyras J. Tissue viscoelasticity is related to tissue composition but may not fully predict the apparent-level viscoelasticity in human trabecular bone - An experimental and finite element study. J Biomech. 2017 Dec 8;65:96-105. doi: 10.1016/j.jbiomech.2017.10.002. Epub 2017

  32. Liukkonen MK, Mononen ME, Vartiainen P, Kaukinen P, Bragge T, Suomalainen JS, Malo MKH, Venesmaa S, Kakela P, Pihlajamaki J, Karjalainen PA, Arokoski JP and Korhonen RK. Evaluation of the Effect of Bariatric Surgery-Induced Weight Loss on Knee Gait and Cartilage Degeneration. J Biomech Eng. 2018 Apr 1;140(4). pii: 2662611. doi: 10.1115/1.4038330.

  33. Liukkonen MK, Mononen ME, Tanska P, Saarakkala S, Nieminen MT and Korhonen RK. Application of a semi-automatic cartilage segmentation method for biomechanical modeling of the knee joint. Comput Methods Biomech Biomed Engin. 2017 Oct;20(13):1453-1463. doi:

  34. Liukkonen MK, Mononen ME, Klets O, Arokoski JP, Saarakkala S and Korhonen RK. Simulation of Subject-Specific Progression of Knee Osteoarthritis and Comparison to Experimental Follow-up Data: Data from the Osteoarthritis Initiative. Sci Rep. 2017 Aug 23;7(1):9177. doi: 10.1038/s41598-017-09013-7.

  35. Rasanen LP, Tanska P, Zbyn S, van Donkelaar CC, Trattnig S, Nieminen MT and Korhonen RK. The effect of fixed charge density and cartilage swelling on mechanics of knee joint cartilage during simulated gait. J Biomech. 2017 Aug 16;61:34-44. doi: 10.1016/j.jbiomech.2017.06.041. Epub 2017

  36. Han SK, Ronkainen AP, Saarakkala S, Rieppo L, ORCID: 0000-0001-5542-4060, Herzog W and Korhonen RK. Alterations in structural macromolecules and chondrocyte deformations in lapine retropatellar cartilage 9 weeks after anterior cruciate ligament transection. J Orthop Res. 2018 Jan;36(1):342-350. doi: 10.1002/jor.23650. Epub 2017 Jul 31.

  37. Viren T, Honkanen JT, Danso EK, Rieppo L, Korhonen RK and Toyras J. Ultrasound Assessment of Human Meniscus. Ultrasound Med Biol. 2017 Sep;43(9):1753-1763. doi:

  38. Danso EK, Oinas JMT, Saarakkala S, Mikkonen S, Toyras J and Korhonen RK. Structure-function relationships of human meniscus. J Mech Behav Biomed Mater. 2017 Mar;67:51-60. doi: 10.1016/j.jmbbm.2016.12.002.

  39. Venalainen MS, Mononen ME, Salo J, Rasanen LP, Jurvelin JS, Toyras J, Viren T and Korhonen RK. Quantitative Evaluation of the Mechanical Risks Caused by Focal Cartilage Defects in the Knee. Sci Rep. 2016 Nov 29;6:37538. doi: 10.1038/srep37538.

  40. Fick JM, P Ronkainen A, Madden R, Sawatsky A, Tiitu V, Herzog W and Korhonen RK. Early in situ changes in chondrocyte biomechanical responses due to a partial meniscectomy in the lateral compartment of the mature rabbit knee joint. J Biomech. 2016 Dec 8;49(16):4057-4064. doi: 10.1016/j.jbiomech.2016.10.039. Epub

  41. Klets O, Mononen ME, Tanska P, Nieminen MT, Korhonen RK and Saarakkala S. Comparison of different material models of articular cartilage in 3D computational modeling of the knee: Data from the Osteoarthritis Initiative (OAI). J Biomech. 2016 Dec 8;49(16):3891-3900. doi: 10.1016/j.jbiomech.2016.10.025. Epub

  42. Rasanen LP, Tanska P, Mononen ME, Lammentausta E, Zbyn S, Venalainen MS, Szomolanyi P, van Donkelaar CC, Jurvelin JS, Trattnig S, Nieminen MT and Korhonen RK. Spatial variation of fixed charge density in knee joint cartilage from sodium MRI - Implication on knee joint mechanics under static loading. J Biomech. 2016 Oct 3;49(14):3387-3396. doi: 10.1016/j.jbiomech.2016.09.011. Epub

  43. Florea C, Tanska P, Mononen ME, Qu C, Lammi MJ, Laasanen MS and Korhonen RK. A combined experimental atomic force microscopy-based nanoindentation and computational modeling approach to unravel the key contributors to the time-dependent mechanical behavior of single cells. Biomech Model Mechanobiol. 2017 Feb;16(1):297-311. doi:

  44. Ronkainen AP, Fick JM, Herzog W and Korhonen RK. Site-specific cell-tissue interactions in rabbit knee joint articular cartilage. J Biomech. 2016 Sep 6;49(13):2882-2890. doi: 10.1016/j.jbiomech.2016.06.033. Epub

  45. Halonen KS, Mononen ME, Toyras J, Kroger H, Joukainen A and Korhonen RK. Optimal graft stiffness and pre-strain restore normal joint motion and cartilage responses in ACL reconstructed knee. J Biomech. 2016 Sep 6;49(13):2566-2576. doi: 10.1016/j.jbiomech.2016.05.002. Epub

  46. Puhakka PH, Te Moller NC, Tanska P, Saarakkala S, Tiitu V, Korhonen RK, Brommer H, Viren T, Jurvelin JS and Toyras J. Optical coherence tomography enables accurate measurement of equine cartilage thickness for determination of speed of sound. Acta Orthop. 2016 Aug;87(4):418-24. doi: 10.1080/17453674.2016.1180578. Epub 2016

  47. Halonen KS, Mononen ME, Jurvelin JS, Toyras J, Klodowski A, Kulmala JP and Korhonen RK. Importance of Patella, Quadriceps Forces, and Depthwise Cartilage Structure on Knee Joint Motion and Cartilage Response During Gait. J Biomech Eng. 2016 Jul 1;138(7). pii: 2520868. doi: 10.1115/1.4033516.

  48. Makela JTA and Korhonen RK. Highly nonlinear stress-relaxation response of articular cartilage in indentation: Importance of collagen nonlinearity. J Biomech. 2016 Jun 14;49(9):1734-1741. doi: 10.1016/j.jbiomech.2016.04.002. Epub

  49. Venalainen MS, Mononen ME, Vaananen SP, Jurvelin JS, Toyras J, Viren T and Korhonen RK. Effect of bone inhomogeneity on tibiofemoral contact mechanics during physiological loading. J Biomech. 2016 May 3;49(7):1111-1120. doi: 10.1016/j.jbiomech.2016.02.033. Epub

  50. Mononen ME, Tanska P, Isaksson H and Korhonen RK. A Novel Method to Simulate the Progression of Collagen Degeneration of Cartilage in the Knee: Data from the Osteoarthritis Initiative. Sci Rep. 2016 Feb 24;6:21415. doi: 10.1038/srep21415.

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