Total hip replacement,in which both the head of the femur and its socket are
replaced, is done to restore movement to hips damaged by osteoarthritis, or late stage degenerative bone and cartilage disease,or other injuries and disease.
The number of total hip replacements is expected to increase over the next few decades. National Hospital Discharge Survey (NHDS) data expose trends and estimates of the number and rate of total hip replacements and average length of stay among inpatients aged 45 and over.
Source: cdc.gov