Kopuz C, Erk K, Baris Y S, Onderoglu S, Sinav A
Department of Anatomy, Ondokuz Mayis University, Medical School, Samsun.
Ann Anat. 1995 Mar;177(2):151-4. doi: 10.1016/s0940-9602(11)80064-6.
In standard textbooks of anatomy it is generally accepted that the fibrous ring of the mitral valve lies in a single plane throughout its entire circumference. Some authors have stated otherwise, but there are no morphometric studies. 30 formalin-fixed hearts were sectioned to reveal the shape of the fibrous ring of the mitral valve and studied by morphometric, radiographic and histological methods. It was noted that the fibrous ring adopted a horizontal "S" shape around the two commissures and the average distance between the highest and lowest parts of the fibrous ring was found to be 7.1 mm (range 6.2-12.5 mm). Radiographic evaluation revealed that the fibrous ring lies approximately in two planes rather than in one. Histological study showed that the fibrous tissue of the mitral valve is continuous with the aortic fibrous ring, and that a slight but significant thickening marks the insertion of the mitral valve. The mitral valve thus lies in two planes, and it is hoped that this information will contribute to cardiac and valvuloplastic surgery.
在标准解剖学教科书中，人们普遍认为二尖瓣纤维环在其整个圆周上都处于单一平面内。一些作者则持不同观点，但尚无形态计量学研究。对30颗福尔马林固定的心脏进行切片，以揭示二尖瓣纤维环的形状，并采用形态计量学、影像学和组织学方法进行研究。结果发现，纤维环在两个瓣叶连合处周围呈水平“S”形，纤维环最高和最低部分之间的平均距离为7.1毫米（范围6.2 - 12.5毫米）。影像学评估显示，纤维环大约处于两个平面而非一个平面。组织学研究表明，二尖瓣的纤维组织与主动脉纤维环相连，二尖瓣附着处有轻微但显著的增厚。因此，二尖瓣处于两个平面，希望这些信息将有助于心脏和瓣膜成形手术。
