It involved a tiny microphone being attached to participants’ knees to pick up high-frequency sounds.
Although not audible to humans, the waveforms can be analysed by computers to give an insight into knee health.
Better diagnosis of osteoarthritis and more tailored treatments are possible, the researchers said.
But they acknowledged that more research and trials in larger numbers of people were needed first.
Osteoarthritis of the knee is a common degenerative joint condition, which can cause pain, stiffness and swelling in the joint.