Article (Published version) (967 Kb) - Limited access to UNIGE
Development of a force amplitude- and location-sensing device designed to improve the ligament balancing procedure in TKA.
|Published in||IEEE Transactions on Biomedical Engineering. 2005, vol. 52, no. 9, p. 1609-11|
|Abstract||To improve the ligament balancing procedure during total knee arthroplasty a force-sensing device to intraoperatively measure knee joint forces and moments has been developed. It consists of two sensitive plates, one for each condyle, a tibial base plate and a set of spaces to adapt the device thickness to the patient-specific tibiofemoral gap. Each sensitive plate is equipped with three deformable bridges instrumented with thick-film piezoresistive sensors, which allow accurate measurements of the amplitude and location of the tibiofemoral contact forces. The net varus-valgus moment is then computed to characterize the ligamentous imbalance. The developed device has a measurement range of 0-500 N and an intrinsic accuracy of 0.5% full scale. Experimental trials on a plastic knee joint model and on a cadaver specimen demonstrated the proper function of the device in situ. The results obtained indicated that the novel force-sensing device has an appropriate range of measurement and a strong potential to offer useful quantitative information and effective assistance during the ligament balancing procedure in total knee arthroplasty.|
|Keywords||Arthroplasty, Replacement, Knee/instrumentation/methods — Cadaver — Computer Simulation — Computer-Aided Design — Equipment Design — Equipment Failure Analysis — Humans — Knee Joint/physiopathology/surgery — Ligaments/physiopathology/surgery — Models, Biological — Prosthesis Fitting/instrumentation/methods — Stress, Mechanical — Transducers, Pressure|
|Research group||Chirurgie orthopédique et traumatologique (98)|
|CROTTET, Denis et al. Development of a force amplitude- and location-sensing device designed to improve the ligament balancing procedure in TKA. In: IEEE Transactions on Biomedical Engineering, 2005, vol. 52, n° 9, p. 1609-11. https://archive-ouverte.unige.ch/unige:39729|