Early Diagnosis Of Dysbaric Osteonecrosis.
NIOSH 1981 Jul:56 pages
The transcript of a meeting of the Undersea Medical Society devoted to early diagnosis of dysbaric osteonecrosis is presented. Radioactive isotope scanning seems to be more effective in detecting partial bone lesions sooner than X-rays. There is a high probability, however, of false positive scans. Using radioisotope scanning as a diagnostic tool in commercial diving is discussed. A monograph on osteonecrosis is included. Epidemiological aspects of osteonecrosis are discussed. The incidence of osteonecrosis in commercial divers in the western hemisphere is about 3 to 30 percent and is related to the number of years of diving and depth of dives. The pathogenesis of osteonecrosis is described. Dysbaric bone lesions result from the loss of blood supply. Loss of blood supply and death of bones and marrow produce no radiologic abnormality in and of itself. X-ray findings are the result of secondary changes following the death of bones and marrow. The etiology of osteonecrosis is considered. Dead bones and marrow are the result of gas absorption into and release from tissues. This could be due to air in the bloodstream, blood sludging, or swelling fat cells inside a rigid bony frame. Early detection, prevention, and treatment are described.
NIOSH-Contract; Diagnostic-tests; Accident-analysis; Physiological-measurements; Clinical-symptoms; Blood-sampling; Diagnostic-techniques; Accident-prevention; Physiology; Clinical-diagnosis; Exposure-limits;
NTIS Accession No.
NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Undersea Medical Society, Bethesda, Maryland, UMS Publication Number 51(DO), 56 pages, 5 references