09 March 2009
The reseatch focuses on orthopaedic shoulder prostheses which are used to replace shoulders fractured in falls in the elderly, and occasionally following high-energy motor vehicle collisions or by direct violent trauma. They can also be applied in other situations where shoulder replacement is required e.g. arthritic patients.The prostheses need to be tested to ensure that they attach correctly to the surrounding bones and tendons, reliably replicating the anatomical structure of a shoulder and a patient’s mobility and movement over time. During the test the prosthesis is attached to a cadaver and the MultiTest 10-x is used to pull on the prosthesis repair site at a constant rate of tension, in the line of pull of normal muscles. The MultiTest 10-x cyclic testing feature is particularly useful for this application, with a range of tensile tests cycling between different loads for 999 times. The results from these cyclic tests show which shoulder replacement prosthesis is the strongest. Mecmesin’s Emperor™ Lite data acquisition software is then used to store and manage the test data. The MultiTest 10-x combined with Emperor™ Lite has provided the University of Brighton Medical School with a cost-effective solution to their application in comparison with other materials testers on the market. Mr Keith Borowsky, Orthopaedic Surgeon at the University of Brighton Medical School said: 'I am very pleased with both the service from Mecmesin and the MultiTest 10-x and would recommend the MultiTest 10-x for a lot of the aspects of soft tissue repair in orthopaedics. The MultiTest 10-x was easy-to-use and ideal for this application, testing the fixation of bones and tendons around a prosthesis inserted for fracture of the shoulder.'
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