Since you have undergone reconstructive back surgery for scoliosis
, there is no harm for sleeping for 10-12 hours.
It is important to note that the more immobile the spine is kept the better it will fuse. Bending, lifting, and twisting are all discouraged for the first three months after surgery
Hope this will help you
Dr Sandhya ManorenjNeurologist
Hi Tech City ,Hyderabad