Magnetic Resonance Imaging of Temporomandibular Joints of Children

Publication date: Available online 28 March 2016
Source:Journal of Oral and Maxillofacial Surgery
Author(s): Justine Moe, Nilesh Desai, Jian Kang, Shelly Abramowicz
PurposeTo identify magnetic resonance imaging (MRI) findings of temporomandibular joints (TMJ) in healthy children.Materials and MethodsThis was a retrospective study of children younger than 18 years of age undergoing MRI of the head for non-autoimmune indications at Children's Healthcare of Atlanta. Patients with congenital or acquired conditions associated with potential TMJ pathology were excluded. Medical records and MRIs were reviewed to document demographic data. Three neuroradiologists independently recorded specific pre-determined MRI findings of the TMJ. The outcome variable was the presence or absence of TMJ findings on MRI. Descriptive and bivariate statistics were used to identify associations (significant at P≤0.05).ResultsEighty-seven patients (54 males, 33 females) with a mean age of 11.2 years met the inclusion criteria. 70% of TMJs had condylar enhancement, 64% of joints had glenoid marginal synovial enhancement, 56% had condylar margin synovial enhancement and 19% of joints had condylar T1 hyper-intense signal. There were no joints with condylar erosion, condylar volume loss or effusion. Findings of normal marrow development were decreased condylar enhancement and greater condylar T1 signal with increased age.ConclusionThis study found a greater than 60% prevalence of synovial enhancement in healthy children. In a healthy child, MRI findings of TMJ synovial enhancement should be carefully correlated with clinical evaluation.



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