Dihydrocodeine :: Spinal Fusion - Only Possible Cure?

after contracting cervical spondylosis through an industrial accident i have taken many different forms of medication, namely diclofenac, tramadol and co-dydramol, none work, two disc replacements later, c5-c6 c6-c7, still symptoms persist, tramadol are horrendous, sleepless nights itchiness mild vertigo drowsiness, a truly awful drug, diclofenac caused some form of breathing difficulty, although im not an asthma sufferer, i think the only possible cure for this illness is a spinal fusion, my surgeon seems reluctant in doing this as he is trialling new discs, i never wanted to be a guinea pig, i just wanted to be cured, four years later im worse than ever, no work cant drive cant sleep at night, any ideas?