Etiology is unknown, but aging, obesity, and joint trauma seem to be disposing.
The patient does not appear ill but pain of varying intensity is present and is especially severe after exercise. There is a definite disturbance in calcium metabolism and this is related to nutritional deficiencies over a lifetime, with most of the vitamins, minerals, enzymes, and hormones involved in the process. There is also a definite relationship with the functions of the endocrine glands. Renal exhaustion from stress is part of the picture. Diet is most important in these cases and should be rich in unprocessed, natural foods which have not been chemicalized in any way.