Valdivieso García J L, Blanco López F, Ocaña Losa L M, Romanos Lezcano A
Hospital Materno-Infantil Reina Sofiá, Córdoba.
An Esp Pediatr. 1989 Dec;31(6):567-9.
The congenital dislocation of the hip stational variation frequency is a known anecdotical data in various screening, but its etiology is unknown. Several authors had reported an increase of CDH during fall or winter time. The theory that they support for this finding is the wear use in some countries for the newborn, inducing extension and approximation of the limbs, which could justify the hip dislocation. Another etiological factors proposed by some authors is the climatical influence in mothers hormonal secretion. We have studied 33,000 alive newborns with a CDH frequency about 9.78 per thousand. The new fact that we report is an increase of CDH cases during springtime, without parallel increase in births. The hypothesis we support is: stational variations of CDH is not caused by mechanical factors instead there are another unknown agents. Nevertheless we advocate the springtime as a "risk factor" in our region.
先天性髋关节脱位的季节变化频率在各种筛查中是已知的轶事性数据，但其病因尚不清楚。几位作者报告说，秋季或冬季先天性髋关节脱位的发生率会增加。他们支持这一发现的理论是，一些国家对新生儿使用襁褓，导致四肢伸展和靠近，这可能是髋关节脱位的原因。一些作者提出的另一个病因是气候对母亲激素分泌的影响。我们研究了33000名存活的新生儿，先天性髋关节脱位的发生率约为千分之9.78。我们报告的新情况是，春季先天性髋关节脱位病例增加，而同期出生人数并未相应增加。我们支持的假设是：先天性髋关节脱位的季节变化不是由机械因素引起的，而是由其他未知因素导致的。然而，我们主张在我们所在地区，春季是一个“风险因素”。
