As our understanding of hip function and disease improves, it is evident that the acetabular fossa has received little attention, despite it comprising over half of the acetabulum's surface area and showing the first signs of degeneration. The fossa's function is expected to be more than augmenting static stability with the ligamentum teres and being a templating landmark in arthroplasty. Indeed, the fossa, which is almost mature at 16 weeks of intrauterine development, plays a key role in hip development, enabling its nutrition through vascularization and synovial fluid, as well as the influx of chondrogenic stem/progenitor cells that build articular cartilage. The pulvinar, a fibrofatty tissue in the fossa, has the same developmental origin as the synovium and articular cartilage and is a biologically active area. Its unique anatomy allows for homogeneous distribution of the axial loads into the joint. It is composed of intra-articular adipose tissue (IAAT), which has adipocytes, fibroblasts, leucocytes, and abundant mast cells, which participate in the inflammatory cascade after an insult to the joint. Hence, the fossa and pulvinar should be considered in decision-making and surgical outcomes in hip preservation surgery, not only for their size, shape, and extent, but also for their biological capacity as a source of cytokines, immune cells, and chondrogenic stem cells. Cite this article: Bone Joint Res 2020;9(12):857-869.

中文翻译：

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髋关节保留手术和髋臼窝。

随着我们对髋关节功能和疾病的了解不断提高，很明显，髋臼窝几乎没有受到关注，尽管它占髋臼表面积的一半以上，并显示出退化的最初迹象。预计窝的功能不仅仅是增加圆韧带的静态稳定性，并且是关节成形术的模板标志。事实上，在宫内发育 16 周时几乎成熟的窝在髋关节发育中发挥着关键作用，通过血管化和滑液以及大量软骨形成干细胞/祖细胞的流入来实现其营养，从而形成关节软骨。枕部是颅窝中的一种纤维脂肪组织，与滑膜和关节软骨具有相同的发育起源，是一个生物活性区域。其独特的解剖结构允许将轴向载荷均匀分布到关节中。它由关节内脂肪组织 (IAAT) 组成，其具有脂肪细胞、成纤维细胞、白细胞和丰富的肥大细胞，它们在关节受到损伤后参与炎症级联反应。因此，在髋关节保留手术的决策和手术结果中应考虑颅窝和枕骨，不仅因为它们的大小、形状和范围，还因为它们作为细胞因子、免疫细胞和软骨干细胞来源的生物学能力细胞。引用这篇文章：因此，在髋关节保留手术的决策和手术结果中应考虑颅窝和枕骨，不仅因为它们的大小、形状和范围，还因为它们作为细胞因子、免疫细胞和软骨干细胞来源的生物学能力细胞。引用这篇文章：因此，在髋关节保留手术的决策和手术结果中应考虑颅窝和枕骨，不仅因为它们的大小、形状和范围，还因为它们作为细胞因子、免疫细胞和软骨干细胞来源的生物学能力细胞。引用这篇文章：骨关节研究2020；9(12):857-869。