Problem
Paget's disease of the bone is a chronic bone disease where the bone rebuilding process is faster than normal, often resulting in an abnormal bone structure. The image in Figure 1 shows a comparison between normal bone and a Pagetic bone.
Explain which topic(s): skeletal system, muscular system, joints helped you understand this disease and how it affects the muscle, joint or movement. You are to state clearly which parts of the lesson(topic) you are referring to in your answer.