People with osteoarthritis often have joint pain and reduced motion. Unlike some other forms of arthritis, osteoarthritis affects only joints and not internal organs. Rheumatoid arthritis-the second most common form of arthritis-affects other parts of the body besides the joints.eople with osteoarthritis often have joint pain and reduced motion. Unlike some other forms of arthritis, osteoarthritis affects only joints and not internal organs. Rheumatoid arthritis-the second most common form of arthritis-affects other parts of the body besides the joints.
Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia. Related to sleep fragmentation: polysomnography, polysomnogram. Arousals and awakenings that disrupt the normal stages and architecture of sleep. These events, which occur commonly in patients who have sleep apnea or chronic pain, contribute to daytime sleepiness and other health problems. Synonym: sleep interruption.
Sleep physiology changes with age as the brain matures and eventually degenerates. With advancing age, there is a decline in the percentage of sleep that is deep, more frequent awakenings, and sleep fragmentation. In the elderly, sleep disorders such as obstructive sleep apnea (OSA) occur more frequently.