:Clinical and MR assessments
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概要
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The purpose of this study was to assess clinical and MR imges on anterior disc displacemeet without reduction in degenerative joint diseases in different age groups.Materials and methods: Degenerative joint disease included deep erosion and severe osteophyte on condylar head and irregular surface of mandibular fossa to articular eminence. Two hundred forty-two joints showed anterior disc displacement without reduction in degenerative joint diseases. We assessed as follows: Clinical findings of pain of the TMJ regions, limitaion of the opening and sound of crepitus. MR imge findings of the configuraion of the articular disc, degree of anterior disc displacement and position of the condylar head on MR images with closed mouth position.Results: One hundred twenty-three joints (51%) had pain of TMJ reggons, 55% had limitaion of opening and 29% had crepitus sound. No correlation was found between prevarence of clinical findings and age groups. Configuration of the articular disc: 11% of the discs were biconcave, 89% were deformed configuration in the digenerative joint disease. The prevalence of deformed discs in joints of cases over 30 years of age was higher than the age group of less than 30 years. Degree of anterior displacement: In the degenerative joint disease group, 67% of the discs showed severe anterior displacement, 31% showed moderate and 2% slight. There was no difference between each age group. Position of the condylar head: the position of the condylar head were concentric in 40% of these joints, 31% were anterior position and 30% were posterior position.Conclusion: Age may be correlated with MR image findings of the degenerative joint disease.
- 一般社団法人 日本顎関節学会の論文
一般社団法人 日本顎関節学会 | 論文
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