Galal Omami1, Alan Lurie. 1. Oral and Maxillofacial Radiology, University of Connecticut School of Dental Medicine, Farmington, CT, USA. jellodent@yahoo.com
Abstract
OBJECTIVE: There has been much speculation on the role of the lateral pterygoid muscle (LPM) in temporomandibular joint (TMJ) internal derangement. As a result, this muscle has been the focus of many reports attempting to understand its possible role in TMJ internal derangement. STUDY DESIGN: Magnetic resonance (MR) imaging exams of 108 TMJ disorder patients were assessed for types of morphologic insertion of the superior head of LPM to the condyle-disc complex and possible correlation with disc position. The investigation was made on the sagittal T1-weighted MR images in closed- and open-mouth positions. RESULTS: There was a lack of correlation between attachment pattern of the superior head of LPM and presence or absence of anterior disc displacement. CONCLUSIONS: The explanation of anterior disc displacement based on the attachment type of the superior head of LPM is unlikely; the type of muscular insertion does not appear to have a predictive or prognostic value for TMJ internal derangement. Published by Mosby, Inc.
OBJECTIVE: There has been much speculation on the role of the lateral pterygoid muscle (LPM) in temporomandibular joint (TMJ) internal derangement. As a result, this muscle has been the focus of many reports attempting to understand its possible role in TMJ internal derangement. STUDY DESIGN: Magnetic resonance (MR) imaging exams of 108 TMJ disorderpatients were assessed for types of morphologic insertion of the superior head of LPM to the condyle-disc complex and possible correlation with disc position. The investigation was made on the sagittal T1-weighted MR images in closed- and open-mouth positions. RESULTS: There was a lack of correlation between attachment pattern of the superior head of LPM and presence or absence of anterior disc displacement. CONCLUSIONS: The explanation of anterior disc displacement based on the attachment type of the superior head of LPM is unlikely; the type of muscular insertion does not appear to have a predictive or prognostic value for TMJ internal derangement. Published by Mosby, Inc.
Authors: C M Bernal-Mañas; O González-Sequeros; M Moreno-Cascales; R Sarria-Cabrera; R M Latorre-Reviriego Journal: Surg Radiol Anat Date: 2016-03-16 Impact factor: 1.246