Denied because weight?

I have grade 2 Spondilithesis also c5c6 foraminal stenosis I am having leg numbness tingling weakness you name it I also havr Kaiser and the surgeon denied me surgery because he said the screws would just pull right out because of my weight I am 6'2 300 pounds and loosing has anyone else experienced this? I am getting a second opinion on the 24th I am 36 years old I was very active before my symptoms started 3 months ago I am scheduled for decompression with a chiropractor on a decompression table has that worked for anyone? Thanks for any input