Title :

Biomechanics of Deep Tissue Injuries under Epidermal Loadings

Speaker :

Prof. Arthur F.T. Mak

Dean of Students, Chair Professor of Rehabilitation Engineering

The Hong Kong Polytechnic University, Hong Kong

Venue :

Room 215, William M. W. Mong Engineering Building, CUHK

Date :

Dec 13, 2010, Monday
2:30 PM - 3:30 PM

Abstract :

Forces acting on the body via various external surfaces during locomotion are needed to support the body under gravity, control posture, and overcome inertia. Examples include the forces acting on the plantar foot tissues via the insole during normal gaits, the forces acting on the residual-limb tissues via the prosthetic socket during various movement activities, and the forces acting on the body via the seating surfaces during wheelchair propulsion. Excessive exposure to unwarranted stresses at the body-support interfaces could lead to tissue breakdowns commonly known as pressure ulcers, often presented as deep-tissue injuries around bony prominences or as surface damage on the skin. We will review the literatures that describe how the involved tissues respond to epidermal loading, taking into account both the experimental and computational findings from in vivo and in vitro studies. In particular, we will present our studies on internal tissue deformation and stresses, microcirculatory responses, and histological, cellular and molecular observations associated with deep tissues injuries induced by epidermal loadings. Implications to the management and prevention of pressure ulcers will be discussed.

Biography :

Professor Mak obtained his B.Sc. in Engineering Mechanics with highest honor from the University of Illinois at Urbana-Champaign in 1976 and earned his Ph.D. in Biomechanics at Northwestern University in 1980. After spending 3 years of postdoctoral fellowship in Tissues Mechanics under Professor Van Mow at Rensselaer Polytechnic Institute in New York, Prof. Mak took up an Assistant Professorship in Bioengineering and Orthopedics Research at the University of Pennsylvania. Prof. Mak joined the Jockey Club Rehabilitation Engineering Center at PolyU in 1988 and was promoted to full professorship in 1995. Prof. Mak became Chair Professor of Rehabilitation Engineering in 1997 and in the same year was appointed as the Head of Jockey Club Rehabilitation Engineering Center. Prof. Mak is serving in the editorial boards of a number of international journals on biomedical engineering and rehabilitation engineering. His research interests cover tissue mechanics, biomaterials & tissue engineering, seating biomechanics, peripheral joint biomechanics, prosthetic & orthotic bioengineering and has published in international SCI journals over 120 full-length papers in those areas. Prof. Mak is active in local, regional, and international professional bodies related to biomedical and rehabilitation engineering. Prof. Mak is a member of the Asia Pacific Working Group of the International Federation for Medical and Biological Engineering, President of the World Association for Chinese Biomedical Engineers, a member of the World Council on Biomechanics, and was on the Executive Board of the International Society for Prosthetics and Orthotics. Prof. Mak has held visiting/ adjunct faculty positions at Sichuan University and University of Pittsburgh. In 2005-2009, Prof. Mak served as the Founding Head of the Department of Health Technology and Informatics. The Department is the PolyU home for Biomedical Engineering, Biomedical Sciences, and Biomedical Radiation & Imaging. Prof. Mak was PolyU’s Associate Vice President (Academic Development) in 2006-2010. Since 2008, Prof. Mak has also been serving as PolyU’s Founding Dean of Students.

    **************************************** ALL ARE WELCOME ****************************************

Enquiries: Ms. Winnie Wong or Prof. Wen J. Li, Department of Mechanical and Automation Engineering, CUHK at 2609 8337. *MAE Series (2010-11) is contained in the World-Wide Web home page at http://www3.mae.cuhk.edu.hk/maeseminars.php#mae