Which bones are involved in Pagets Disease of Bone?
PDB may be monostotic (involvement of one bone) or more commonly (80%) polyostotic (involvement of two or more bones). It has a predilection for the axial skeletal but can affect nearly any bone in the body. The most frequently involved bones are the pelvis (70%), femur (55%), lumbar spine (53%), skull (42%), and tibia (32%). Each individual pagetic site may progress or evolve over time; however, the number of skeletal sites involved is usually stable over time, and it is rare for new skeletal lesions to develop after diagnosis.
