本人在家坦潜水多年，因为很喜欢这里的气氛，不过一直没有什么贡献。今天冒泡，却是请求帮助，很不好意思。

我的腰不太好，去年年初有一次急性下腰痛。当时看了脊椎指压医生(chiropractor),照了X光，说是有两个脊椎骨距离比较近。做了近十次治疗，急性痛很快缓解了，可时不时还是有隐痛。医生教了一套体操，让天天坚持做。因为懒，我只是三天打鱼两天晒网。结果去年九月有一天作了体操之后，发现在左大腿根在大腿左右转动的时候很痛(正常行走不痛)。我想可能是拉伤了，休息一下就没事了。结果停止任何运动之后到现在已经四个月了还是没有好转。而且两个月前还开始时不时感到臀部和大腿后侧隐痛。前几天去看了一个orthopaedics医生，让我去照MRI。现在检查结果已经出来，可是我要等月底才能约到他。我上网查了查，不是很明白，好像有点严重的样子。所以想请懂行的医生朋友能不能给我解释一下。

做了两个MRI：一个是hip joint,包括股骨头在内一切正常；另一个是lower back, 情况好象不妙。下面是报告的部分内容(有问题的部分)：

MRI lumber spine: Sagittal T1-weighted and T2-weighted images of the lumber spine were obtained along with axial proton density images parallel to the L2-L3 through L5-S1 disc spaces. Axial T2-wieghted images were obtained from L3-L4 through the sacrum.

The L2-L3 and L3-L4 levels are unremarkable. Mild desiccation of disc material is present at L4-l5. This level is otherwise unremarkable.

At L5-S1, endplate spurring is present along with a concentric disc bulge. Desiccation of disc material is present.A mild broad-based central disc protrusion may be present as well,but there is no significant compression of the thecal sac or the nerve roots. Prominent type II fatty degenerative signal changes are present in the endplates. There is no spinal stenosis. The neural foramina are patent.

A relatively large Tarlov cyst is seen posterior to the second sacral segment, noted noted to the right of midline.

IMPRESSION: Degenerative changes are present at L5-S1. A superimposed mild broad-based central disc protrusion may be present at this leel as well, but there is no evidence fo compression of the thecal sac ro nerve roots.

Incidental note is made of a relatively large right-sided Tarlov cyst posterior to the the second sacral segment.