<s>[INST] I have a lower back problem. It started one day at work. the pain was first in my knee, then it started to move into my buttocks and down my leg. is this unusual for a back injury. when i first got injured i reported the pain in my knee, because that is where i felt the pain. over time like i said the pain got much worse [/INST] HiThank you for asking HCMI have gone through your query.Your problem can be sciatica due to nerve compression from lumbosacral spine.It arises due to injury of intervertebral disc.Other cases which the pain you described can occur is referred pain from knee or hip joint.A thorough orthopedic examination is necessary to rule out this.A X ray followed by MRI might be required in case of any positive findings.For such cases i advise NSAIDs like aceclofenac , muscle relaxants like cyclobenzaprine and neurotropic drugs.I also advise physiotherapy and muscle strengthening exercises along with this.Hope this may help you.Let me know if you have any further queries.Thanks. </s>