. Journal of radiology . nation ofthe lumber spine and sacrum has beenmade in approximately 12,000 of aconsecutive series of 70,000 patients inthe Mayo Clinic. Six hundred andtwenty-one of the 12,000 had spinabifida occulta, showing an incidence ofslightly more than 5 per cent. Thecondition occurred about twice as oftenin the male as in the female. The de-fect was in the first one or two sacralsegments in 70 per cent, in the fifthlumbar segment in per cent, andin the lower sacral segment in 3 percent. Associated spina bifida occultaand bifurcation with sacralization of thetransverse proce
. Journal of radiology . nation ofthe lumber spine and sacrum has beenmade in approximately 12,000 of aconsecutive series of 70,000 patients inthe Mayo Clinic. Six hundred andtwenty-one of the 12,000 had spinabifida occulta, showing an incidence ofslightly more than 5 per cent. Thecondition occurred about twice as oftenin the male as in the female. The de-fect was in the first one or two sacralsegments in 70 per cent, in the fifthlumbar segment in per cent, andin the lower sacral segment in 3 percent. Associated spina bifida occultaand bifurcation with sacralization of thetransverse process of the fifth lumbarvertebra occured in per Cases Presenting Signs. and Symptoms of Spina Bifida .- Case 14 (A240447). A 35 years, had had a trophic ulceron the right foot for four years and abulging in the sacral region with a pal-pable defect of the spine (Fig 16).Until the age of 10 he had had nocontrol of the rectal sphincter. Case 15 (A293929). A child,aged 4 years, had club feet and webbed. Pig. 22 (A13603). Spina bifida pre-senting signs and symptoms. 360 DEVELOPMENTAL ANOMALIES OF THE SPINE—SUTHERLAND
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