How long after getting a spinal fusion in the t12-l1 would i be able to go to classes?

Depends: Fusions can be done in different ways. A more minimally invasive procedure ( if appropriate) could have you back in 2-4 weeks. Other types could take months for recovery. Realize that the underlying problem that requires a fusion determines how extensive the procedure has to be. In addition, a t12-l1 fusion is an unusual place to need this type of surgery, so more info would be needed.

3 months: It willbe uncomfortable at first why doyou need a fusion at that level? Uncommon level for degenerative conmon for trauma.