Fused spine
Good answers. Certainly, get confirmation from the client’s physician and/or physical therapist that your client is medically clear to engage in an exercise program. Definitely find out exactly which vertebrae were fused, as well as the recommendations followed in the client’s rehab program. While there may some contraindicated exercises unique to this client’s history, I agree with Karin that exercises performed in a standing trunk flexion to 90 degrees, or back extension exercises from 90 degrees of flexion to neutral are ones to avoid.
Take care.