Around the Haversian canals, there are concentric lamellae, which look a bit like tree rings.

在哈弗斯管有许多同心薄片，看起来有点像树的年轮。

In the center of these osteons, there are hollow spaces called Haversian canals, which contain the blood supply and innervation for the bone cells.

在些骨单位的中心，个中空的部分被称作哈弗斯管，提供了为骨细胞供应血液以及神的空间。

In osteoporosis, there’s thinning of the cortical bone, widening of the Haversian canals and a decrease in the number of trabeculae in the spongy bone.

骨质疏松症中，皮质骨会变薄、哈弗斯管变宽、松质骨内的骨小梁数目减少。

So with osteoporosis, abnormal findings include fewer trabeculae in the spongy bone and thinning of the cortical bone, as well as the widening of the Haversian canals.

那么，骨质疏松的异常包括松质骨中的骨小梁会减少，皮质骨变薄，还有哈弗斯管变宽。