my 80 yr old grandma is suffering from chronic pain in bones in hip and lower spine areas.her serum has been found to have normal levels of electrolytes,total protein & albumin, lipid levels, liver and renal function (including uric acid) tests except raised levels of following ie, Alkaline phosphatase = 765 U/L and Lactate dehydrogenase levels at 588 IU/L.Kindly suggest the probable pathological cause/s in her case leading to her symptoms and the raised levels of above mentioned enzymes. thanks