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Adelaide, Australia – A groundbreaking repair technique for rotator cuff injuries developed by researchers at the University of Adelaide is delivering transformative results for individuals struggling with shoulder pain.
The innovative approach, known as the trans osseous knotless anchor (ATOK), was spearheaded by Professor Michael Sandow from the University’s Centre for Orthopaedic and Trauma Research (COTR). It addresses the limitations of traditional methods and offers renewed hope for patients, particularly older adults.
The Challenge: High Failure Rates in Shoulder Repairs
Every year, around 10,000 rotator cuff repairs are performed in Australia. Despite this, the failure or re-tear rates range from 40% to 60%, leaving many patients with limited options. Traditional techniques involve securing the tendon into the bone using sutures or multiple anchors during arthroscopic procedures, yet these methods often fall short in improving patient outcomes.
“Failure rates, especially in older patients, have driven a shift toward reverse shoulder replacements instead of cuff repairs,” said Professor Sandow. However, reverse replacements come with their own risks, with nearly 30% of patients under 60 requiring revision surgery—a costly and challenging process.
The ATOK Innovation
Inspired to improve patient outcomes, Professor Sandow developed the ATOK technique. It combines the effectiveness of traditional open repair with modern arthroscopic tools. The tendon is secured through the bone using specially designed anchor points manufactured by Australian company Signature Orthopedics.
Promising Results
Initial trials of the ATOK technique in 15 patients over 60 with severe rotator cuff tears showed overwhelmingly positive results, which were published in the Journal of Shoulder and Elbow Surgery. A broader review of 155 surgeries in patients over 70 further validated its success, with only two cases requiring shoulder replacements following injuries from falls.
“Eighty percent of patients now experience no or mild symptoms post-surgery,” said Professor Sandow. “Even patients who had failed previous surgeries have seen significant improvements in function.”
One notable case involved a 55-year-old patient who had undergone multiple unsuccessful surgeries and was told he would need a shoulder replacement, limiting him to desk work. After undergoing ATOK repair and physiotherapy, he returned to his physically demanding job within three months.
A Game-Changer in Shoulder Care
COTR Director Professor Dominic Thewlis praised the ATOK technique as a shining example of world-class research with real-world benefits. “We are passionate about translating research into meaningful outcomes. Seeing the positive impact ATOK has had on patients has been truly rewarding,” he said.
With its ability to restore function and alleviate symptoms in patients previously facing limited options, the ATOK technique is poised to revolutionize shoulder injury recovery globally.
Provided by the University of Adelaide.
