Hi Alyassia. Since in the fitness world “one size does NOT fit all,” I would highly recommend working with your client’s medical ‘team’ in designing a safe exercise program for him. I have worked with several post-surgical/post-rehab back patients and a key to helping them continue their progress and continue to safely recover from surgery and therapy is working with their physician and therapist. I truly see this type (and really all types) of client ‘referral’ after a surgical or therapy intervention as a ‘continuum of care’ in which I as the trainer am just another important piece on their road to recovery.
I hope that this helps.