Seasonal Variation of Birth Dates of Infants with Congenital Dislocation of the Hip

Seasonal variations of congenital dislocation of the hip

“…Though the peak incidence is earliest in Sweden, there is no further evidence of a relationship between latitude and peak incidence. The fact that the seasonal variations have already been found in the newborn also points in the same direction (Pap, 1956;Andren et al, 1963). Since temperature per se could not explain the inverse pattern in Northern and Southern Hemispheres alternative explanations should be looked for.…”

“…Of the various malformations, congenital dislocation of the hip (CDH) has been singled out, because of the consistency of findings observed in widely separated localities of the Northern Hemisphere (Nagura, 1955;Pap, 1956;Record et al, 1958;Andren et al, 1963;Medalieetal.,1966).…”

Retracted: Joined at the hip? A paleoepidemiological study of developmental dysplasia of the hip and its relation to swaddling practices among indigenous peoples of North America

“…These include Saudis (Shaheen, 1989;Moussa and Alomran, 2007), Japanese, Turkish (Kutlu et al, 1992), S ami, and Native Americans and Indigenous Peoples of Canada (Loder and Skopelja, 2011). Infants born in colder winter months demonstrate poorer acetabular development compared to those born in the warmer months (Andr en and Palm en, 1963;Siffel et al, 2005) as measured by acetabular depth and acetabular angles; this may explain the increase in DDH in children born in the winter or may represent an effect of increased swaddling or tight clothing to protect the baby from the colder weather (Walker, 1977). In cultures where infant transport involves abduction of the legs around the mother (as in Hong Kong) or where swaddling is absent, DDH is virtually unheard of (e.g., Southern Chinese, African Bantu, Thai, North Korean, Sri Lankan; Hoaglund et al, 1981;Roper, 1976).…”

To swaddle, or not to swaddle? paleoepidemiology of developmental dysplasia of the hip and the swaddling dilemma among the indigenous populations of North America

“…These include Saudis (Moussa and Alomran, ; Shaheen, ), Japanese, Turkish (Kutlu et al, ), Sámi, and Native Americans and Indigenous Peoples of Canada (Lodder and Skopelja, ). Infants born in colder winter months demonstrate poorer acetabular development compared with those born in the warmer months (Andren and Palmen, ; Siffel et al, ) as measured by acetabular depth and acetabular angles; this may explain the increase in DDH in children born in the winter or may represent an effect of increased swaddling or tight clothing to protect the baby from the colder weather (Walker, ). In cultures where infant transport involves abduction of the legs around the mother (as in Hong Kong) or where swaddling is absent, DDH is virtually unheard of (e.g.…”