Arthroscopy: The Journal of Arthroscopic & Related Surgery
Vascularity of the hip labrum: A cadaveric investigation
Section snippets
Methods
Twelve hips from 6 human fresh-frozen cadavers were used (International Biological Inc, Detroit, MI). All specimens were female with a mean age of 68 years (range, 65 to 80 years). It was not possible to obtain a history regarding abnormalities of function of the hip, but there were no severe arthritic changes in the specimens on gross inspection.
High-resolution surface-coil magnetic resonance imaging (MRI) was performed in sagittal and coronal planes on a clinical 1.5-Tesla unit for anatomic
Results
Table 1 shows the mean subjective grading for each zone, as well as the standard deviations and medians. Blood supply to the labrum was minimal (Fig 5), but there were relative differences between zones. For all labral regions (anterior, superior, posterior, and inferior), the subjective grading scale showed significantly greater vascularity in the capsular zones (zone I) compared with the articular zones (zone II) (P < .01). The overall mean vascularity grade was greatest in the subdivision IB
Discussion
The acetabular labrum is a fibrocartilaginous rim attached to the acetabular margin, which increases the acetabular depth. It is strongly fixed with the transverse acetabular ligament.12, 13 The labrum is able to exert a high tensile force on the rim of the acetabulum and thus plays a very important role in the stability of the hip joint.14, 15, 16 Alterations in the labrum have been suggested to predispose hips to osteoarthrosis.1, 4, 5, 17, 18 Dorell and Catterall19 and, subsequently, Ganz et
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