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Biomedical subjects

G Robin

Publications and source records attributed to G Robin.

At least 55 records · Page 3Linked to original sources
PubMed1976

Osteoporosis and fractures of the neck of the femur: some epidemiologic considerations.

The prevalence of osteoporosis in Jerusalem during the years 1967-71 was studied in a general population sample and in patients with fractures of the neck of the femur. Osteoporosis was determined by qualitative examination of lateral X-ray films of the lumbar spine. The prevalence of definite osteoporosis in a random population sample was 8.6%, and was higher in females (14.5%) than in males (2.9%). The prevalence of definite osteoporosis among 389 patients with fractures of the neck of the femur was 32.2%--37.8% in females and 17.4% in males. The results of this survey support the conclusion that osteoporosis plays an important role in the pathogenesis of fractures of the neck of the femur.

Female↗
PubMed1975

Rheumatic disorders in the South African Negro. Part I. Rheumatoid arthritis and ankylosing spondylitis.

Epidemiological studies to determine the prevalence of rheumatoid arthritis (RA) have been carried out in two South African Negro populations: one rural people in the north-western Transvaal, and the other an urban community in Johannesburg. Altogether 1352 subjects over the age of 15 years were examined clinically and radiologically; serological tests for rheumatoid factor (RF) were carried out in 920. Rheumatoid arthritis was graded 'definite' or 'probable' on the basis of a modification of the 'Rome criteria' of 1963. A marked difference in the prevalence of RA was encountered in the two populations. Among the rural Blacks only 1 respondent had definite RA and 6 had probable RA, giving a prevalence of 0,87% for combined definite and probable RA. Among the urban group 5 respondents had definite RA and 13 had probable RA, a combined prevalence of 3,3%. This difference is statistically highly significant (P less than 0,01). Moreover, the form and severity of the disorder differed markedly in the two populations. In the rural community such changes as were encountered were invariable mild and no-one had clinical features resembling classical rheumatoid arthritis; by contrast, among the urban Blacks the changes resembled those of rheumatoid disease in White populations. Such marked differences in genetically closely related communities point to the importance of sociological and environmental factors in the pathogenesis of rheumatoid arthritis.

Adolescent↗
PubMed1975

Rheumatoid arthritis in an urban South African Negro population.

(1) An epidemiological study of an urban South African Negro community has been carried out in Johannesburg. Altogether 964 respondents were examined and in each case radiographs of the hands and feet were obtained. Rheumatoid factor tests were carried out on 404 serum samples. (2) Rheumatoid arthritis (RA) was graded 'definite' or 'probable' on the basis of a modification of the Rome criteria (Kellgren, Jeffrey, and Ball, 1963a). (3) In marked contrast to the findings in rural Africans the prevalence of RA in this community was similar to that in Caucasian populations. Five respondents (all elderly women) had 'definite' RA, giving a prevalence of 1.4% of the females and 0.9% of the total population sample over 15 years old. The prevalence of 'definite' and 'probable' RA combined was 2.6% for males, 3.7% for females, and 3.3% for all individuals over 15 years old. Prevalence increased with age, reaching a maximum in the 65- to 74-year cohort. (4) The form and severity of the clinical and radiological features were unlike the mild manifestations seen in rural African peoples and closely resembled the usual clinical picture of rheumatoid disease. (5) The latex fixation test was positive in 12.1% of the sera tested, which is similar to the high titres found in other African populations. No obvious cause for this phenomenon was found. (6) Several reasons for the marked difference in prevalence of RA between this urban African population and a rural African population are considered. Marked intraracial differences such as this point to the importance of sociological and environmental factors in the pathogenesis of rheumatoid arthritis.

Adolescent↗
PubMed1975

A photoelastic force-indicating spreader for the correction of scoliosis.

The Harrington rod procedure for the surgical correction of scoliosis may be safely applied only if the spreader is instrumented with a force indicator. A method is described here of providing the surgeon with simple and direct means of controlling the force exerted with the spreader, using a photoelastic transducer with a special device for temperature compensation which is built into the spreader.

Elasticity↗