Economic aspects of the demand for total hip replacement in the elderly.

Approximately 1--3% of people attaining the age of 65 will eventually require a hip replacement. At present the elderly account for about half the total hip replacements performed annually under the National Health Service. Although this may appear to be difficult to justify on economic grounds, there may be minor financial gains and a saving of medical and community resources, in addition to the relief from symptoms and dependence upon others, which results from a successful operation.