Racial and gender variations in adult hip morphology

Abstract

Pelvic X-rays of 99 adult patients (198 hips) were analysed in 58 men and 41 women to determine the morphology of the adult hip in Malawians. For each hip the centre edge angle of Wiberg, the acetabular angle of Sharp and the acetabular head index were measured. For each parameter, women were more dysplastic than men, and for the acetabular angle of Sharp there was a significant gender difference (p<0.05, t test). Our figures were compared to those of Fujii et al. who had measured the same parameters in Japanese and British hips. His results taken with ours showed that within a racial group, women were more dysplastic that men and that Japanese hips were more dysplastic than British hips, which were in turn more dysplastic than Malawian hips.Résumé Les radiographies pelviennes de 99 malades adultes (198 hanches) ont été analysées chez 58 hommes et 41 femmes pour déterminer la morphologie de la hanche adulte au Malawi. Pour chaque hanche, l'angle de Wiberg, l'angle acétabulaire de Sharp, et l'Index Tête /Acétabulum ont été mesurés. Pour chaque paramètre les femmes étaient plus dysplasiques que les hommes et pour l'angle acétabulaire de Sharp il y avait une différen-ce significative selon le sexe (p <0.05, t-test). Nos chiffres ont été comparés à ceux de Fujii et coll. qui avaient mesuré les mêmes paramètres sur des hanches japonais et britanniques. Ses résultats, considérés avec les nôtres, ont montré que dans un groupe racial les femmes étaient plus dysplasiques que les hommes, et les hanches japonaises étaient plus dysplasiques que les hanches britanniques elles-même plus dysplasiques que les hanches du Malawi.

Hip dysplasia and osteoarthrosis

“…We have found that most studies investigating this relationship have been based on urograms and colon radiographs, with little or no information on tube-to-film distance, pelvic orientation, magnification, or centering of the X-ray beam (Croft et al 1991, Lau et al 1995, Smith et al 1995, Lavy et al 2003. Furthermore, most OA case definitions used have either been Croft's classification based solely on male urograms, or the classification of Lawrence and Kellgren, which is notoriously problematic regarding reproducibility (Sun et al 1997).…”

Mild acetabular dysplasia and risk of osteoarthritis of the hip: a case-control study

“…Geographical variations have been reported in hip OA and its relationship to mild dysplasia. Japanese,17 18 African,19 20 Turkish21 and Sami22 populations appear to have different prevalences of hip OA and acetabular dysplasia, and different associations than in Western Europeans. A caveat of many cross-sectional studies is that the measures of dysplasia are often undertaken on hips with established OA and could be secondary to OA and remodelling rather than being a pre-existing primary risk factor for its development.…”

A geometric morphometric analysis of acetabular shape of the primate hip joint in relation to locomotor behaviour

“…Despite this prediction, however, only a limited number of studies have analysed the morphological characteristics of the primate acetabulum from an anthropological perspective (Schultz, 1969;MacLatchy and Bossert, 1996;Canillas et al, 2011;Hogervorst et al, 2011;Bonneau, 2013;Hammond et al, 2013a). Although some anthropology-focused authors have analysed and contributed to the research on the morphology and variability of the human acetabulum (Havelock, 1893;Erickson et al, 2000;Rissech et al, 2001;Mafart, 2005;Bonneau et al, 2012), most of the information available has been obtained from studies conducted for medical purposes (Bullough et al, 1973;Müller-Gerbl et al, 1993;Feugier et al, 1997;Witte et al, 1997;Thompson et al, 2000;Gupta et al, 2001;Varodompun et al, 2002;Lavy et al, 2003;Leunig et al, 2003;Zilber et al, 2004;Govsa et al, 2005;Sampson, 2005;Tallroth and Lepist€ o, 2006;Ganz et al, 2008;Vandenbussche et al, 2008;K€ ohnlein et al, 2009;Krebs et al, 2009;Pollard et al, 2010;Nakahara et al, 2011;Zeng et al, 2012). Other studies have examined load transfer across the hip bone and the hip joint (Eckstein et al, 1994;Dalstra and Huiskes, 1995;Lazennec et al, 1997;Witte et al, 1997) and the thickness and stress of the cartilage in humans (Kur...…”