Welcome to HCM
Read your prob, you have been suffering from spinal fusion
at L4-5 leval, spinal fusion compress the nerve
n this is cause of pain. if you have low grade pain n have not any sensory loss then you should take tab muscles relaxant n gabapentin
, it helps is subsiding your pain . if you have high grade pain n sensory loss then you should go through spinal surgury. consult with spinal surgeon n do as per his advise.