Hello, my boyfriend suffers from severe lower chro

Hello, my boyfriend suffers from severe lower chronic abdominal pain- he has had several colonoscopies, catscans,biopsies, etc. and they cannot seem to find the source of the pain. His 3rd lumbar vertabrae has been broken for a while and untreated and one of his ribs is out of place.He has also had four shoulder sugeries I feel like yoga could help manage the unconfortable and pain wrenching symptoms but Im not sure which type would be best for him. Any advice?