Musculoskeletal
MSK Protocols
Signa GE 1.5 T LX 9.1 protocols
MR Information
MSK Procedures
Referring Providers
Acetabular Sublabral Recess
Courtesy Dr. Elizabeth Tan
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Axial T1 Direct MRAr. noting contrast undercutting posterior labrum. |
Coronal T1 Direct MRAr. showing a partially detached posterior labrum. |
Comments
The detailed descriptions of normal variants in the glenoid labrum have not been matched in a timely fashion by parallel reports of pitfalls in the acetabular labrum. The explanation for this discrepancy lies in the fact that hip arthoscopy is a more invasive and complication-prone procedure than in the glenohumeral joint, and it is, therefore, performed only when there is a firm clinical suspicion of pathology.
As a result, descriptions are relatively scarce, and the existing literature lacks consistency; in part, this is due to differences in MR protocols between institutions, or lack of sufficient documentation for the MR findings. In this regard, although an anterior recess or sulcus has been defined, it has not been reproduced consistently by all investigatiors.
The posterior sublabral sulcus was well documented as a normal variant by Philip
Dinaurer (AJR 2004; 183:1745-1753). In this paper, based in 58 hips,
the absence of anterior recesses, as well as the absence of posterior labral
tears was suggested as a good diagnostic aid.