No he does not have a bone disease

· porotic hyperostosis (a bone disease)

Bone diseases are prefixed by "osteo-". The study of bone diseases is osteopathy. Joint diseases are prefixed by "arthro-". The study of joint diseases is arthropathy.
Arthritis.
Osteoarthropathy is a disease of both bone and joint.
Arthritis is a disease of the bones and joints.

Paget's disease of bone (osteitis deformans ) is the abnormal formation of bone tissue that results in weakened and deformed bones.

Paget's disease. Pagetic bone with an excessively high ratio of woven to compact bone is formed, causing spotty weakness in the Bone. The cause is unknown and may be viral. The disease usually localizes in the spine, pelvis, femur and skull.