design for knees
design of artificial knee replacements for younger patients
is to be improved, following £25,761 funding by the Arthritis
Research Campaign to Pro-Vice-Chancellor for research
and professor of mechanical engineering John Fisher.
knee prostheses currently show good success rates for
up to ten years, there is some doubt about long-term performance
in younger, more active patients, who need the new joint
to last longer," explained Professor Fisher.
particular, as the joint wears, the generation and accumulation
in the tissues of micron-size particles can lead to it
joints are currently designed and tested under standard
conditions that replicate the forces and motions of the
natural knee. But recent studies have shown that there
are actually considerable differences between artificial
and natural knee joints in certain types of motion.
Fisher and his team plan to investigate the wear of knee
prostheses in laboratory simulators by simulating these
particular types of motion.