Hi, Thanks for writing in. There is degeneration of lumbar spine disc between L 4 and L5. This is resulting in the disc herniating between the bones. The nerve roots pass through these neural foramina and you might have severe nerve root compression at that level. The nerve pain may be controlled with restricted physical activity and pain relief medication. Please do not do heavy physical activity till you are comfortable. If there is severe pain then consulting a neurosurgeon will help. Nowadays there are procedures like laser assisted surgery which are minimally invasive with good results.