Henry was diagnosed as having an inflammation of the bone marrow and adjacent bone. which term describes this condition?

The term that describes this condition is osteomyelitis.

Osteomyelitis is an infection of the bone, a rare but serious condition. Bones can become infected in a number of ways; Infection in one part of the body may spread through the bloodstream in the bone, or an open fracture or surgery may expose the bone to infection.