RT Journal
A1 Beaulé, Paul E.
A1 Salineros, Matias
A1 Rakhra, Kawan
T1 Acetabular Labral Limbus as a Cause of Hip PainA Report of Five Cases
JF The Journal of Bone & Joint Surgery
JO The Journal of Bone & Joint Surgery
YR 2011
FD January 5
VO 93
IS 1
SP 91
OP 96
DO 10.2106/JBJS.J.00743
UL http://dx.doi.org/10.2106/JBJS.J.00743
AB 
The treatment of hip disease in the young adult is a rapidly evolving and growing area of orthopaedic surgery1, driven by improved imaging techniques2,3, safe and reproducible open hip surgery4, and less invasive techniques such as hip arthroscopy5. Currently, the most common indication for hip arthroscopy is the treatment of labral abnormalities6, usually from one of four causes7: trauma, a degenerative condition, dysplasia, and impingement. Labral abnormalities are often associated with acetabular chondral damage8,9, varying in severity from a softening and/or fibrillation to complete cartilage detachment from its osseous bed. Because the treatment of the labral abnormality varies, depending on the underlying etiology and associated pathological condition, it is critical that variant anatomy of the labrum and the labral chondral junction be recognized and treated accordingly7,10. Descriptions of variations of the labral anatomy have focused mainly on the manner in which arthroscopic findings correlate with magnetic resonance imaging (MRI) findings. The primary variation has been termed sublabral sulcus, defined as a cleft between the labrum and adjacent articular cartilage. The reported location of this sublabral sulcus is variable, as is the prevalence, although it is most commonly noted anteriorly. Byrd was the first, as far as we know, to describe as "normal anomalous variations" these partial separations of the labrum from the lateral aspect of the osseous rim of the acetabulum11. However, previous studies have some limitations since the magnetic resonance arthrography (MRA) was reviewed retrospectively to determine the prevalence and location of these sulci, making the exact location difficult to interpret.