科研之友
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摘要
To review the literature regarding normal labral variants at MRI. %26lt;br%26gt;A systematic search was performed in PubMed/MEDLINE and Embase. For each included study, information regarding normal labral variants and findings in asymptomatic subjects was extracted. %26lt;br%26gt;There were 24 studies in symptomatic patients, evaluating 822 hips. The presence of a sublabral sulcus was reported by four studies in 41 hips (5 % of all evaluated hips), occurring at all anatomical locations. There were 3 cadaver studies, investigating 32 hips and reporting no normal labral variants. There were 8 studies in asymptomatic subjects, evaluating 1,096 hips. Labral tears were reported in 213 hips (19 %); no sublabral sulci were reported. Labral shape was most commonly triangular (59-89 %), whereas rounded (11-16 %), flattened (13-37 %) and teardrop (41 %) shapes were less frequently seen. Overall methodological quality of included studies was moderate, with median total quality scores of 43 % (symptomatic patients), 71 % (cadavers) and 70 % (asymptomatic subjects). %26lt;br%26gt;At MRI, a sublabral sulcus can be found at any anatomical location. Our results suggest that its prevalence is at least 5 % in symptomatic patients. The most common labral shape is triangular. Rounded, flattened and teardrop shapes are less frequent but are also encountered in asymptomatic subjects. %26lt;br%26gt;aEuro cent A sublabral sulcus can be detected by MRI at any anatomical site %26lt;br%26gt;aEuro cent Its prevalence is estimated to be at least 5 % in symptomatic patients %26lt;br%26gt;aEuro cent The most common shape of the hip labrum is triangular %26lt;br%26gt;aEuro cent Rounded, flattened and teardrop shapes are less frequent.
- 出版日期2013-6
