Introduction

Core decompression supplemented by stem cell incorporation is an upcoming field of research in avascular necrosis of the femoral head. Plugging the canal to avoid loss of the concentrate injected has been recognized as a crucial step to improve the efficacy of the procedure. We describe a new surgical technique that results in native bone plug formation and eliminates the need for any additional blocker.

Methodology

This pilot study was performed on 4 cadaveric proximal femurs. The standard technique was used for core decompression and bone marrow aspirate concentrate (BMAC) injection. Additionally, two more tracts were drilled, superolateral, and inferomedial to the primary tract.

Results

No leakage of the radiopaque dye was observed from the entry point of the primary tract, ensuring its complete blockage in all 4 cadaveric proximal femurs. This was confirmed by sectioning the femur specimens which manifested bone plug formation at the confluence of the three tracts.

Conclusion

Our technique is a unique and economical method of preventing leakage of BMAC through the entry point in the proximal femoral metaphysis. This may not only benefit patients but can also provide the groundwork for further research in this field.

中文翻译：

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一种具有成本效益的新型骨髓抽吸浓缩物减压手术技术：初步尸体研究

介绍

以干细胞掺入为补充的核心减压是股骨头缺血性坏死的一个即将到来的研究领域。堵塞根管以避免注射浓缩物的损失已被认为是提高手术效果的关键步骤。我们描述了一种新的手术技术，可以形成天然骨栓，并且不需要任何额外的阻滞剂。

方法

这项初步研究是在 4 具尸体股骨近端进行的。标准技术用于核心减压和骨髓抽吸浓缩物（BMAC）注射。此外，还钻了两个管道，位于主管道的上外侧和下内侧。

结果

从主要管道的入口点没有观察到不透射线染料的泄漏，确保其完全阻塞所有 4 具尸体近端股骨。通过股骨标本切片证实了这一点，股骨标本显示在三个束的汇合处形成骨栓。

结论

我们的技术是一种独特且经济的方法，可防止 BMAC 通过近端股骨干骺端的入口点渗漏。这不仅可能使患者受益，而且还可以为该领域的进一步研究奠定基础。