Simulations of the consequences of tongue surgery on tongue mobility: implications for speech production in post-surgery conditions.

Stéphanie Buchaillard (1) , Muriel Brix (2) , Pascal Perrier (1) , Yohan Payan (3)

1 GIPSA-AABC - GIPSA - Acoustique, Aéroacoustique, Biomécanique et Contrôle
2 CHUGA - Centre Hospitalier Universitaire [CHU Grenoble]
3 TIMC-IMAG-GMCAO - Gestes Medico-chirurgicaux Assistés par Ordinateur

This paper presents simulations of the impact of tongue surgery on tongue movements and on speech articulation. For this, a 3D biomechanical Finite Element (FE) model of the tongue is used. Muscles are represented within the FE structure by specific subsets of elements. The tongue model is inserted in the upper airways including jaw, palate and pharyngeal walls. Two examples of tongue surgery, which are quite common in the treatment of cancers of the oral cavity are modelled: hemiglossectomy and large resection of the mouth floor. Three kinds of reconstruction are also modelled, assuming flaps with a low, medium or high stiffnesses. The impact of the surgery without any reconstruction and with the three different reconstructions is quantitatively measured and compared during simulated speech production sequences. More precisely, differences in global 3D tongue shape and in velocity patterns during tongue displacements are evaluated.

Mots clés: tongue model; computer aided surgery; biomechanics; finite element; speech production; maxillo-facial surgery; glossectomy

Domaines: Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]; Ingénierie biomédicale

Stéphanie Buchaillard, Muriel Brix, Pascal Perrier, Yohan Payan. Simulations of the consequences of tongue surgery on tongue mobility: implications for speech production in post-surgery conditions.. The International Journal of Medical Robotics and Computer Assisted Surgery, 2007, 3 (3), pp.252-261. ⟨10.1002/rcs.142⟩. ⟨hal-00179288⟩