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Aussie researchers test kangaroo tendons to help injured athletes

By Meletus EZE

Tendons from Australia’s iconic kangaroos are being tested for use in human knee, ankle and shoulder ligament-replacement surgery, with some of the country’s injury-prone athletes seen as the first few major beneficiaries of the novel treatment.

The unprecedented study has “early proof of concept testing” that kangaroo tendon is “six times stronger than human cruciate ligament,” the University of Sydney said in a statement.

“Kangaroo tendon has a similar composition to humans but is longer and has better mechanical properties, which makes it an exciting natural product that could be used in a range of surgical procedures,” said orthopedic surgeon Nick Hartnell, who heads one of the three industry partners working with the university on the project.

The project includes an investment of 1.73 million dollars by the industry partners, with the tendons for the medical graft material salvaged from the kangaroo meat industry and annual culling of the animals.

The university said another element of the project includes testing and manufacturing the viability of 3D-printed biodegradable screws made from a ceramic material to fix the kangaroo tendon to human bone.

“Materials used in ligament reconstructions come from three sources: humans, pigs, and synthetic constructs, and each has drawbacks,” said the university’s Dr. Elizabeth Clarke, who is co-leading the kangaroo tendon-testing project.

The medical use of the marsupial tendons could be key in the treatment of injury-prone athletes such as Australian footballer Alex Johnson, Hartnell told local media.

Hartnell said the defender, who damaged one of his knee ligaments on Sunday and could need a sixth knee reconstruction, stands to gain from the kangaroo tendon treatment.

The researchers said the next few steps will include making the kangaroo tendons safe and effective for transplantation in humans.

 

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