Application of an artificial neural network and morphing techniques in the redesign of dysplastic trochlea

• Autorzy: Cho K. J. , Müller J. H. , Erasmus P. J. , Dejour D. , Scheffer C.

Identyfikatory

DOI

10.5277/abb140209

• Języki publikacji: EN

Abstrakty

EN

Segmentation and computer assisted design tools have the potential to test the validity of simulated surgical procedures, e.g., trochleoplasty. A repeatable measurement method for three dimensional femur models that enables quantification of knee parameters of the distal femur is presented. Fifteen healthy knees are analysed using the method to provide a training set for an artificial neural network. The aim is to use this artificial neural network for the prediction of parameter values that describe the shape of a normal trochlear groove geometry. This is achieved by feeding the artificial neural network with the unaffected parameters of a dysplastic knee. Four dysplastic knees (Type A through D) are virtually redesigned by way of morphing the groove geometries based on the suggested shape from the artificial neural network. Each of the four resulting shapes is analysed and compared to its initial dysplastic shape in terms of three anteroposterior dimensions: lateral, central and medial. For the four knees the trochlear depth is increased, the ventral trochlear prominence reduced and the sulcus angle corrected to within published normal ranges. The results show a lateral facet elevation inadequate, with a sulcus deepening or a depression trochleoplasty more beneficial to correct trochlear dysplasia.

Słowa kluczowe

EN

artificial neural network; trochlea redesign; trochlear dysplasia; trochleoplasty; trochlea morphing

PL

sztuczna sieć neuronowa; bloczek; biomechanika

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2014
• Tom: Vol. 16, no. 2
• Strony: 75--84
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Cho K. J.

• Department of Mechanical and Mechatronic Engineering, Stellenbosch University, Stellenbosch, South Africa

autor

Müller J. H.

• Department of Mechanical and Mechatronic Engineering, Stellenbosch University, Stellenbosch, South Africa

autor

Erasmus P. J.

• Department of Orthopaedics, Stellenbosch University, Tygerberg, South Africa

autor

Dejour D.

• Department of Knee and Sport Surgery, Lyon Ortho Clinic, Lyon, France

autor

Scheffer C.

• Department of Mechanical and Mechatronic Engineering, Stellenbosch University, Stellenbosch, South Africa

Bibliografia

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