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目的为肩峰撞击征的诊断和治疗提供断层解剖学基础。方法 (1)取15例女性标本进行肩关节的断层切割观察;(2)运用MRI技术对10例女性健康人的肩峰下脂肪垫进行测量。结果 (1)肩峰下脂肪垫上方为斜方肌,下方为冈上肌,在肩峰下面与肩峰下三角肌滑膜囊相邻,在横断面上呈方形,在斜矢状断面和斜冠状断面上呈长条形;肩峰下脂肪垫长度为(48.91±7.5)mm,宽度为(28.0±4.7)mm,肩峰下脂肪垫厚度在冈上肌中部为(11.5±1.9)mm,在肩峰外缘为(3.1±0.8)mm。(2)MRI轴位、斜矢状位、斜冠状位可清楚显示肩峰下脂肪垫,肩峰下脂肪垫长度(49.8±7.0)mm,宽度为(28.7±5.2)mm,肩峰下脂肪垫厚度在冈上肌中部为(12.5±1.5)mm,在肩峰外缘为(3.2±0.8)mm。(3)断层肩峰下脂肪垫长度、宽度、厚度观测值数据和MRI数据分别进行t检验结果无差异(P>0.05)。结论 MRI的肩峰下脂肪垫测量可以为肩峰撞击症早期诊断提供解剖学依据。
Objective To provide the basis of tomographic anatomy for the diagnosis and treatment of acromion impingement. Methods (1) Fifteen female specimens were scored for shoulder joint dissection. (2) The acromiocutaneous fat pads of 10 healthy women were measured by MRI. Results (1) Above the acromiocutaneous fat pad was the trapezius muscle, the supraspinatus muscle below the acromion and adjacent to the acromial deltoid synovial capsule under the acromion, square in cross section and The length of the fat pad at the shoulder acuminate was (48.91 ± 7.5) mm and the width was (28.0 ± 4.7) mm. The thickness of the fat pad under the acromion was (11.5 ± 1.9) mm , The outer edge of the shoulder was (3.1 ± 0.8) mm. (2) MRI axial position, oblique sagittal position and oblique coronal position can clearly show the fat pad under the acromiocutaneous shoulder. The length of the fat pad under the acromion was (49.8 ± 7.0) mm, the width was (28.7 ± 5.2) mm, The thickness of the pad was (12.5 ± 1.5) mm in the middle of the supraspinatus muscle and (3.2 ± 0.8) mm in the periphery of the acromion. (3) There was no difference in t-test results between the data of the length, width and thickness of the fat pad under the acromion and the MRI data (P> 0.05). Conclusion MRI of the subacromial fat pad measurement can provide anatomical basis for the early diagnosis of acromion impingement.