Incidence of lumbar disc surgery. A population-based study in Olmsted County, Minnesota, 1950-1979.
Age- and sex-specific incidence rates of operation for suspected lumbar disc prolapse were determined for residents of Olmsted County, Minnesota, for the 30-year period 1950 through 1979. The incidence rate (adjusted to the age and sex distribution of the United States white population in 1980) was 52.3 per 100,000 person-years for all such operations and 46.3 per 100,000 person-years for initial operations. These rates remained fairly constant over the study period. A distinction was made between surgically proven and unproven cases of lumbar disc prolapse. Patients with a surgically proven lumbar disc prolapse had about 10 times the risk of another operation for disc prolapse within 10 years after the first operation compared with the general population.
Bruske-Hohlfeld
I
I
Medis-Institut, Neuherberg, West Germany.
Merritt
J L
JL
Onofrio
B M
BM
Stonnington
H H
HH
Offord
K P
KP
Bergstralh
E J
EJ
Beard
C M
CM
Melton
L J
LJ
Kurland
L T
LT
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D015994:Incidence; D007403:Intervertebral Disc / Q000601:surgery*; D007405:Intervertebral Disc Displacement / Q000453:epidemiology / Q000601:surgery; D008161:Lumbosacral Region; D008297:Male; D008875:Middle Aged; D008910:Minnesota; D012008:Recurrence; D012086:Reoperation; D012307:Risk Factors; D012737:Sex Factors; D013514:Surgical Procedures, Operative / Q000706:statistics & numerical data*