Prediction of jaw opening function after mandibular reconstruction using subject-specific musculoskeletal modelling.
J Oral Rehabil
; 51(6): 1050-1060, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38544336
ABSTRACT
BACKGROUND:
Mandibular reconstruction patients often suffer abnormalities in the mandibular kinematics. In silico simulations, such as musculoskeletal modelling, can be used to predict post-operative mandibular kinematics. It is important to validate the mandibular musculoskeletal model and analyse the factors influencing its accuracy.OBJECTIVES:
To investigate the jaw opening-closing movements after mandibular reconstruction, as predicted by the subject-specific musculoskeletal model, and the factors influencing its accuracy.METHODS:
Ten mandibular reconstruction patients were enrolled in this study. Cone-beam computed tomography images, mandibular movements, and surface electromyogram signals were recorded preoperatively. A subject-specific mandibular musculoskeletal model was established to predict surgical outcomes using patient-averaged muscle parameter changes as model inputs. Jaw bone geometry was replaced by surgical planning results, and the muscle insertion sites were registered based on the non-rigid iterative closest point method. The predicted jaw kinematic data were validated based on 6-month post-operative measurements. Correlations between the prediction accuracy and patient characteristics (age, pathology and surgical scope) were further analysed.RESULTS:
The root mean square error (RMSE) for lower incisor displacement was 31.4%, and the error for peak magnitude of jaw opening was 4.9 mm. Age, post-operative infection and radiotherapy influenced the prediction accuracy. The amount of masseter detachment showed little correlation with jaw opening.CONCLUSION:
The mandibular musculoskeletal model successfully predicted short-range jaw opening functions after mandibular reconstruction. It provides a novel surgical planning method to predict the risk of developing trismus.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Eletromiografia
/
Tomografia Computadorizada de Feixe Cônico
/
Reconstrução Mandibular
/
Mandíbula
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article