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.
Biphasic sleep (or diphasic, bimodal or bifurcated sleep) is the practice of sleeping during two periods over 24 hours, while polyphasic sleep refers to sleeping multiple times â usually more than two.[1] Each of these is in contrast to monophasic sleep, which is one period of sleep over 24 hours. Segmented sleep and divided sleep may refer to polyphasic or biphasic sleep, but may also refer to interrupted sleep, where the sleep has one or several shorter periods of wakefulness.