In situ progress controller for fracture healing after plate osteosynthesis
This technical osteosynthesis measuring device aids monitoring of fracture healing. This innovation facilitates the gathering of mechanical stress data from implanted osteosynthesis plates and the determination of retention forces between orthodontic attachments (osteosynthesis screws) and bone. The measuring device consists of capacitive sensors which are placed between osteosynthesis plate and bone screws, or between osteosythesis plate and bone. Each sensor is a part of a LC-resonance circuit and is read-out by means of a wireless electromagnetic field. Signal analysis is performed in vitro. Subsequently, the healing process of a fractured bone can be monitored and post-operative complications or implant loosening can be avoided or corrected early.
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