外中耳发育畸形患者的颞下颌关节高分辨率CT观察  

High-resolution CT of the temporomandibular joint in patients with developmental malformation of the external middle ear

作　　者：李莉[1,2] 陈潭辉 方哲明[1] LI Li;CHEN Tanhui;FANG Zheming(Departmentt of Radiology,the First Affiliated Hospital of Fujian Medical University,Fuzhou 350005,China;Department of Medical Imaging,Dongying City People’s Hospital,Dongying,Shandong Province 257091,China)

机构地区：[1]福建医科大学附属第一医院影像科,福建福州350005 [2]东营市人民医院医学影像科,山东东营257091

出　　处：《实用放射学杂志》2024年第6期884-887,共4页Journal of Practical Radiology

摘　　要：目的探讨外中耳发育畸形患者的颞下颌关节发育情况。方法回顾性分析183例外中耳畸形患者高分辨率CT(HRCT)影像,共检查出248个患耳,目测发现53例共67个颞下颌关节异常(异常组),约占27%,进一步量化、测量下颌骨髁突内外径、前后径、颞下颌关节窝深度、双侧髁突横轴连线夹角,同样测量30例健康对照(对照组)对应数据,统计分析2组的差异。结果异常组髁突内外径(12.22±3.30)mm,对照组(17.67±2.90)mm(t=-9.814,P<0.001);异常组髁突前后径(7.58±1.82)mm,对照组(8.62±1.09)mm(t=-3.850,P<0.001);异常组关节窝深度(4.16±2.83)mm,对照组(6.12±1.65)mm(t=-4.700,P<0.001);异常组双侧髁突横轴连线夹角(122.17±21.12)°,对照组(136.49±11.04)°(t=-3.437,P<0.001),差异均有统计学意义(P<0.05)。结论外中耳畸形患者有27%存在目测可见的颞下颌关节异常,具体表现为髁突内外径及前后径变短、关节窝变浅、双侧髁突横轴延长线夹角变小。Objective To investigate the development of the temporomandibular joint in patients with developmental malformations of the external middle ear.Methods Retrospective analysis of high-resolution computed tomography(HRCT)images of 183 patients with external middle ear malformation,a total of 248 affected ears were examined,and 53 patients with 67 temporomandibular joint abnormalities(abnormal group)were detected visually,accounting for approximately 27%.Further quantification and measurement of the internal and external diameters and anterior and posterior diameters of the mandibular condyle,the depth of the temporomandibular joint fossa,and the angle of the transverse axis of the condyles bilaterally,and the corresponding data of 30 healthy controls(control group)were also measured,and the differences between the two groups were statistically analyzed.Results The internal and external diameters of the condyle was(12.22±3.30)mm in the abnormal group,compared with(17.67±2.90)mm in the control group(t=-9.814,P<0.001);the anterior and posterior diameters of the condyle was(7.58±1.82)mm in the abnormal group,compared with(8.62±1.09)mm in the control group(t=-3.850,P<0.001);the joint fossa depth was(4.16±2.83)mm in the abnormal group,compared with(6.12±1.65)mm in the control group(t=-4.700,P<0.001);the angle of the transverse axis of the condyles bilaterally was(122.17±21.12)°in the abnormal group,compared with(136.49±11.04)°in the control group(t=-3.437,P<0.001),all differences were statistically significant(P<0.05).Conclusion Visually visible temporomandibular joint abnormalities are present in 27%of patients with external middle ear malformation,as evidenced by shortening internal and external diameters and anterior and posterior diameters of the condyle,shallowing joint fossa,and reducing angle of the transverse axis extension line of the condyles bilaterally.

关 键 词：高分辨率CT 中外耳畸形 颞下颌关节 发育 

分 类 号：R814.42[医药卫生—影像医学与核医学] R764.7[医药卫生—放射医学]