Three hundred eighty-one total hip arthroplasties were performed on residents of Olmsted County, Minnesota, during the period from 1969 to 1980, for a rate (adjusted for sex and age) of 44.6 per 100,000 person-years. Rates rose with age, were higher for women than men, and were higher among urban than rural residents of the county. If we assume that the Olmsted County experience is medically optimal and apply it to the 1980 United States population, we calculate a national requirement of over 100,000 total hip arthroplasties per year, well above the current actual figure. If this calculated number of total hip arthroplasties were actually performed each year, over 1.4 million hospital days would be required, and direct medical costs would probably exceed $1 billion annually.
Summary
An incomplete anti‐D serum from a white donor living in England and not having any demonstrable Negro ancestry was found to be capable of detecting Gm‐like with appropriate agglutinating sera.
The donor and several members of her family were shown to be Gm‐like(+) Evidence is presented to show that the Gm‐like factor in this family is similar to, but not identical with, the one found in Negroes.
Résumé
On a trowé un sérum anti‐D incomplet provenant d'un donneur de race blanchevivant en Angleterre et n'ayant aucune ascendance noire‐capable de mettre en évidence la propriété Gm‐like avec les sérums agglutinants appropriés.
Le donneur et plusieurs membres de sa famille sont Gm‐like(+). On démontre, preuve à l'appui, que le facteur Gm‐like présent dans cette famille est très semblable, mais non identique à celui que l'on trouve chez lea noirs.
Zusammenfassung
Bei einem weißen in England lebenden Spender wurde ein inkompletter Anti‐D‐Antikörper gefunden, der sich im Ansatz mit geeigneten agglutinierenden Seren zum Nachweis des Antigens Gm‐like eignete. Beim Spender fehlte jeder Hinweis auf eine negroide Blutzumischung bei seinen Vorfahren.
Der Spender sowie mehrere Angehörige seiner Familie erwiesen sich als Gm‐like (+). Es werden Hinweise vorgelegt, die zeigen, daß der in seiner Familie vor‐handene Gm‐like‐Faktor mit demjenigen der Neger wohl sehr ähnlich, nicht aber identisch ist.
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