2. Bone pain
Pain in bone cancer happens mainly with activity and results in a limp. It is caused by the abnormal growth of cells in the bones, and it is particularly common and found in earlier stages when the tumor affects the long bones of the arms and legs, which are more commonly subject to weight bearing.
In some cases, a limp may develop due to the weakened bone structure and the pain from activity. Since pain develops progressively, some patients get used to the symptoms, depending on their age and perceived health. However, they sooner or later feel something wrong, or the pain is too severe to be explained by the usual signs of aging.