i think u would have had spinal injury
6 months ago,when u skid from a chair.But since there was not much discomfort u didnt care for.Probably during cholesystectomy while doing intubation for giving a general anaesthesia
,there would have been some extension of the neck which aggravated the problem.Ur problem still aggraved afer chiropractic manipulations.Ur CT Neck suggests disc osteophyte
complexes at c5, c6 levels.I feel u better get a neurosurgeon consultation with out delay n he will advise u to get mri cervical spine
to know the severity of comression of spinal cord basing on which he may advise u surgeryor conservative treatment like hard cervical collar
,physiotherapy(IFT), n analgesics like aceclofenac etc.