Arthritis sufferers are known to have poor sleep patterns caused by pain. Conditions such as osteoarthritis are a common source of hip pain in the older adult.
A recent study in New Zealand showed that sleep is improved after hip joint replacement. All patients had painful symptoms from arthritis that woke them up at night. Less hip pain after the operation meant better sleep. If the patients were awakened from sleep, it was for some other reason than from hip pain.