Tirman P F, Bost F W, Garvin G J, Peterfy C G, Mall J C, Steinbach L S, Feller J F, Crues J V
Department of Radiology, San Francisco Magnetic Resonance Center, CA 94118.
Radiology. 1994 Nov;193(2):431-6. doi: 10.1148/radiology.193.2.7972758.
To determine the utility of magnetic resonance (MR) imaging and MR arthrography in the evaluation of arthroscopic findings of posterosuperior glenoid impingement.
The findings at MR imaging, MR arthrography, and physical examination with the patient under anesthesia were retrospectively reviewed in eight patients with arthroscopic evidence of posterosuperior glenoid impingement.
All patients had shoulder pain; anterior instability was found in six patients. Other than bone marrow abnormalities, findings at MR imaging were not reliable for the detection of posterosuperior glenoid impingement. MR arthrography was superior to routine MR imaging in all four cases in which it was done; positioning the shoulder in abduction and external rotation was beneficial in three of four patients.
Impingement of the rotator cuff on the posterior superior glenoid labrum is a cause of posterior shoulder pain in athletes who throw. MR arthrography may allow detection of abnormalities associated with this clinical entity.
确定磁共振（MR）成像和MR关节造影在评估肩胛盂后上撞击症关节镜检查结果中的作用。
回顾性分析8例经关节镜证实存在肩胛盂后上撞击症患者的MR成像、MR关节造影及麻醉下体格检查结果。
所有患者均有肩部疼痛；6例患者存在前向不稳定。除骨髓异常外，MR成像对肩胛盂后上撞击症的检测结果不可靠。在进行MR关节造影的4例患者中，其表现均优于常规MR成像；4例患者中有3例将肩部置于外展和外旋位时效果更佳。
肩袖撞击肩胛盂后上唇是投掷运动员肩部后侧疼痛的原因之一。MR关节造影可能有助于检测与此临床病症相关的异常情况。
