Abstract
Subacromial impingement syndrome (SIS) is defined as pressurization and impingement between the acromion, the bursa under the acromion, and the rotator cuff during the abduction and elevation of the shoulder joint, resulting in pain and a functional disturbance of elevation. It is the most common disorder of the shoulder, accounting for 44-65% of all complaints of shoulder pain during a physician’s office visit. The study was performed with the aim of valuing the magnetic resonance imaging (MRI) and computed tomography (CT) in diagnosing patients with SIS. A total of 68 patients with SIS were selected as study subjects and subjected to MRI and CT examinations. The diagnostic accuracy and sensitivity of MRI and CT were, respectively, 97.06 and 70.59% ( P < 0.05 ); the detection rates of SIS grade I, grade II, and grade III by MRI were 91.67%, 96.77%, and 100%, respectively, which were significantly higher than 50%, 80.65%, and 68% by CT, respectively ( P < 0.05 ). MRI and CT detection indicated that there was no significant difference in extensive rotator cuff tear, acromion stenosis, and normal acromion detected by MRI and CT ( P > 0.05 ). In conclusion, the diagnostic accuracy, sensitivity, and detection rate of acromion of MRI were higher compared with those of CT examination, and MRI is more suitable in the clinical diagnosis of SIS.
Highlights
Subacromial impingement syndrome (SIS), as a result of the compression of suprahumeral structures, is a frequent cause of chronic anterior shoulder pain concomitant with limited range of motion, accounting for 50-70% of main complaints of shoulder pain in primary health care [1, 2]
Computed tomography (CT) arthrography is a cost-effective, useful method used for the preoperative assessment of various shoulder pathologies, such as full-thickness rotator cuff tears
More SIS Patients Were Diagnosed by Magnetic resonance imaging (MRI) than CT
Summary
Subacromial impingement syndrome (SIS), as a result of the compression of suprahumeral structures, is a frequent cause of chronic anterior shoulder pain concomitant with limited range of motion, accounting for 50-70% of main complaints of shoulder pain in primary health care [1, 2]. SIS is characterized by a series of pathological changes, ranging from subacromial bursitis to rotator cuff tendinitis and full-thickness rotator cuff tear [3]. External impingement is caused by abnormal contact between the humeral head and extra-articular structures, resulting in subacromial or subcoracoid impingement. SIS encompasses a spectrum of subacromial pathologies, including rotator cuff tears, rotator cuff tendinosis, calcific tendinitis, tendonitis, and bursitis of the shoulder [6]. Magnetic resonance imaging (MRI) is an excellent noninvasive tool for the diagnosis of the pathologies of the shoulder [1, 8]. This imaging method has been reported to effectively demonstrate the soft tissue lesions upon SIS [9]. Computed tomography (CT) arthrography is a cost-effective, useful method used for the preoperative assessment of various shoulder pathologies, such as full-thickness rotator cuff tears [10] In this study, the MRI and CT technologies were performed to diagnose SIS, and the clinical pathological results were taken as the gold standard to analyze the diagnostic value of the MRI and CT technologies in diagnosing SIS, with focus on acromion morphology and A-H distance, in a bid to Journal of Nanomaterials seek a scientific and effective way for the early diagnosis of SIS and to improve function recovery of patients
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