Recovery for posterior foraminotomy is about 6 weeks. This is for muscle recovery and functional stress capacity.
A posterior approach is more uncomfortable initially but has a faster recovery than an anterior approach (ACDF). Patients can be happy with a foraminotomy but it depends upon the disorder that causes compression. If the compression is from the front (uncovertebral joint hypertrophy), it is generally better to go from the front. If the compression is from the rear, a foraminotomy is generally better unless there also is a slip (degenerative spondylolithesis) in which case a posterior foraminotomy os contraindicated.
You can go back to teach in 4 weeks and coach in 6-8 weeks.
The surgery is good for certain conditions, is adequate for others and contraindicated (as above) for even others.
Dr. Corenman