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The University of Southampton

Research project: Determining the optimal mechanical requirements for early intervention devices in the knee

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Interpositional arthroplasty is a treatment option for isolated medial compartment osteoarthritis of the knee. No bone resection and no mechanical fixation are the main advantages of this procedure. However post-operative problems, such as implant dislocation, swelling and severe knee pain have been generally observed.

This project aimed to investigate: 1) the behaviour of the normal knee joint under dynamic loading conditions, 2) the performance of a knee implanted with an interpositional spacer and 3) the effect of several implant design parameters on the behaviour of the implanted knee. The kinematics and contact pressures of the normal knee joint during the activities of walking, stair ascent and squatting were obtained using dynamic finite element analysis.

Finite-element based modelling was able to demonstrate the effect of parameters such as material modulus, thickness and radius of the bearing surface on the implant performance.

Research into knee devices

Related research groups

Bioengineering Science
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