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An acetabular labrum tear or hip labrum tear is a common injury of the acetabular labrum resulting from a number of causes including running, hip dislocation, and deterioration with ageing. Most are thought to result from a gradual tear due to repetitive microtrauma .
Shoulder arthrography can be used to study tears of the rotator cuff, glenoid labrum and biceps. [2] The type of contrast injected into the joint depends on the subsequent imaging that is planned. For pneumoarthrography, gas is used, for CT or radiographs, a water-soluble radiopaque contrast, and for MRI, gadolinium. Double-contrast ...
CT is not usually used due to radiation exposure and no benefit above MRI. [6] It is possible to perform dynamic simulation of hip motion with CT or MRI [24] [25] assisting to establish whether, where, and to what extent, impingement is occurring. The diagnosis is often made in conjunction with a labral tear. [26]
A complex labral tear. An arthroscopic probe is seen at the junction of the labrum and acetabular rim. Hip arthroscopy was initially used for the diagnosis of unexplained hip pain, but is now widely used in the treatment of conditions both in and outside the hip joint itself.
Shulz: The labral is almost like a bumper when you're bowling and people put up the bumpers. The bumper keeps the ball on the track. The bumper keeps the ball on the track.
Additionally, clinicians may order an MRI (Magnetic Resonance Imaging) or CT (Computed Tomography) scan to be conducted utilizing contrast injections to highlight where tears may be present. However, due to inherent variability between humans, manual tests, when possible, are more accurate in determining the presence of a labral tear. [4]
On non-contrast MRI or CT arthrography imaging, lesions might be harder to find, but the more recent 3T MRI scanners might increase the pick-up rate in the absence of contrast. [4] The accepted gold standard for identifying or detecting the glenolabral articular disruption lesion is MR arthroscopy (MRA). [1]
1. Perthes Lesion (A Variant of the Bankart Lesion): MR Imaging and MR Arthrographic Findings with Surgical Correlation Thorsten K. Wischer, Miriam A. Bredella, Harry K. Genant, David W. Stoller, Frederic W. Bost, and Phillip F. J. Tirman AJR January 2002 178:233-237