Thanks for writing in.
Your mother might have retention of fluids in the hands which is causing swollen appearance. This has got nothing to do with bones hence X rays are normal. Edema (swelling) of the hands can be associated with generalized fluid collection or hypoproteinemia
. To tell whether the edema is protein-rich or hypoalbuminemic in origin, check the pit recovery time. Push into the edema fluid to produce a pit. Protein-poor fluid will spring back quickly (like pushing into a balloon filled with saline); protein-rich fluid retains the pit for more than 2 minutes. Protein-poor fluid suggests hepatic disease, renal disease
, or malnutrition
. Protein-rich fluid suggests cardiac disease (congestive heart failure
) or inflammation.
Hope this helps