Tuite M J, Orwin J F
Department of Radiology, University of Wisconsin Clinical Science Center, Madison, WI 53792-3252, USA.
Radiology. 1996 May;199(2):537-40. doi: 10.1148/radiology.199.2.8668808.
To characterize the magnetic resonance (MR) imaging appearance of two anterosuperior labral variants, the sublabral foramen (SLF) and the Buford complex.
The axial gradient-recalled-echo (GRE) MR images and the fat-suppressed, T2-weighted, fast spin-echo (SE) images were reviewed in 19 patients with arthroscopically proved SLF and 11 patients with a Buford complex. The anterosuperior labrum was graded as normal, detached, or absent on the images.
For the patients with an SLF, the anterosuperior labrum was graded as detached in all patients who underwent fast SE imaging but in only 43% of patients who underwent GRE imaging. For the patients with a Buford complex, the anterosuperior labrum was graded as absent in only 30% of patients who underwent GRE imaging and in none of the patients who underwent fast SE imaging.
Isolated MR abnormalities of the anterosuperior labrum may represent either of the two asymptomatic labral variants.
描述两种前上盂唇变异，即盂唇下孔（SLF）和布福德复合体的磁共振（MR）成像表现。
回顾性分析19例经关节镜证实为SLF的患者和11例布福德复合体患者的轴位梯度回波（GRE）MR图像以及脂肪抑制T2加权快速自旋回波（SE）图像。在图像上，将前上盂唇分为正常、分离或缺失。
对于SLF患者，在所有接受快速SE成像的患者中，前上盂唇被分级为分离，但在接受GRE成像的患者中只有43%被分级为分离。对于布福德复合体患者，在接受GRE成像的患者中只有30%的患者前上盂唇被分级为缺失，而在接受快速SE成像的患者中无一例被分级为缺失。
前上盂唇孤立的MR异常可能代表两种无症状的盂唇变异中的任何一种。
