Faculty of Medicine, Department of Orthopedics and Traumatology, Kırıkkale University, Kırıkkale-TURKEY Sağlık Cad. No 1 Fabrikalar Mah, 71100 Kırıkkale, Turkey.
Knee Surg Sports Traumatol Arthrosc. 2012 Feb;20(2):381-6. doi: 10.1007/s00167-011-1566-1. Epub 2011 Jun 8.
Recently, acetabular labral tears were recognized as a source of hip pain. Most of these tears were found to be localized at the chondrolabral junction. The purpose of this study was to evaluate the chondrolabral junction in reference to its collagen fiber orientation and its vascularity, which might be used to explain the preponderance of labral tears.
Eighteen formalinized fetuses with a mean gestational age of 17 weeks (range: 11-24 weeks) were examined. The acetabuli were removed en bloc with the proximal femur for ease of orientation. The acetabuli were prepared and examined in four quadrants, namely, anterior, superior, posterior, and inferior.
The staining pattern of the posteroinferior labrum was more dense than the anterosuperior labrum, due to its high collagen content. Collagen fibers in the posteroinferior quadrants were oriented perpendicularly to the chondrolabral junction, while those in the anterosuperior quadrants had a parallel oriented. Perpendicular collagen orientation and high collagen content may explain the stronger anchorage of the labrum to the bony acetabulum in posteroinferior quadrants. All of the vessels supplying the labrum originate from the capsular connective tissue and traverse the body of the labrum to reach the articular side. None of these vessels traverse the chondrolabral junction to reach the bony acetabulum. The total number of blood vessels was significantly higher in the capsular zone than in the articular zones. The number of blood vessels did not differ between the acetabular quadrants.
In an effort to understand the chondrolabral junction tears, we can conclude that collagen content and fiber orientation may represent the histological basis for the predominance of tears at the anterosuperior region.
最近，人们认识到髋臼唇撕裂是髋关节疼痛的一个来源。这些撕裂大多发生在软骨唇交界处。本研究的目的是评估软骨唇交界处，研究其胶原纤维方向及其血管分布，这可能有助于解释唇撕裂的优势。
检查了 18 个福尔马林固定的胎儿，平均胎龄为 17 周（范围：11-24 周）。为了便于定向，整块取出髋臼和股骨近端。髋臼按四个象限（前、上、后、下）进行准备和检查。
由于后下唇的胶原含量较高，其染色模式比前上唇更密集。后下象限的胶原纤维垂直于软骨唇交界处，而上象限的胶原纤维呈平行排列。垂直的胶原排列和高胶原含量可能解释了后下象限唇与骨性髋臼更强的附着。供应唇的所有血管均起源于囊状结缔组织，穿过唇体到达关节面。这些血管都不穿过软骨唇交界处到达骨性髋臼。血管总数在囊状区明显高于关节区。各象限的血管数量无差异。
为了理解软骨唇交界处撕裂，我们可以得出结论，胶原含量和纤维方向可能代表前上区域撕裂优势的组织学基础。
