title: Resorption of the postero-superior corner of the lateral part of the mandibular condyle correlates with progressive TMJ internal derangement.
abstract: The purpose of this study was to test the hypothesis that resorption of postero-superior corner of lateral part of the mandibular condyle (RLC) occurs with the advancement of TMJ internal derangement (ID). One hundred and sixty-seven TMJs in 122 patients were studied. RLC was assessed on plane radiographs of frontal oblique projection. The correlation between the prevalence of RLC and radiological stage of ID was analysed and clinical correlations to the radiological stage of ID and the prevalence of RLC were discussed. The higher prevalence of RLC in joints with advanced ID was statistically significant (Mann-Whitney U-test, P< 0.05). There was no correlation between the prevalence of RLC and neither OA on the articular surface of the condyle nor clinical symptoms/signs. The result of this study suggests that RLC appears to occur in joints with advanced ID as a result of remodelling changes secondary to ID.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001862:Bone Resorption / Q000000981:diagnostic imaging / Q000209:etiology*; D018450:Disease Progression; D005157:Facial Pain / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008335:Mandibular Condyle / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008875:Middle Aged; D010003:Osteoarthritis / Q000150:complications / Q000000981:diagnostic imaging; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D018709:Statistics, Nonparametric; D013705:Temporomandibular Joint Disorders / Q000145:classification / Q000150:complications*