Revista de la Sociedad Boliviana de Pediatría
versão impressa ISSN 1024-0675
ABSTRACT Objectives: to consider factors that infl uence in the developmental dysplasia of the hips. Design: a survey was applied to the parents of children who went to radiology office, between January 2005 and October 2006, to realize a x-ray of hips. The patients with dysplasia were considered as a study cases and as control cases the ones who did not have dysphasia. The data in Epi Info 3.3.2 were analyzed. Place and context: medical center “Unimed” of the city of La Paz. Results: 142 patients were evaluated, 30 (21,12%) of them had signs of dysplasia with acetabular angles major to 30º. 5 Patients (3,5% of the total and 16,6% of the ones with dysplasia) showed luxation evidence. The average age of patients with dysplasia was of 3.3 months. There was an antecedent of dysplasia in relatives of first degree in 22.6% of the affected patients; OR 1,49 (0,53 - 4,13) P 0.58. Patients with dysplasia and podalic version were 3,3% OR 1,25 (P 0,66) and with dysplasia obtained by Cesarean 53,33%. OR 1,03 (0.43-2.48) P (0. 88). The femoral nuclei were present in only 40% of the patients with dysplasia OR 3.73; P 0,0061 and absentees in 60% OR 0,27 (0,10 - 0,76) P 0.0061. The nucleus was outside the internal superior quadrant in 33.33% of the patients with dysplasia. Conclusion: was an important incidence of dysplasia in the developmental of hips by means by radiology signs.The breech presentation and the birth by Cesarean section were not important factors of risk in this population. The presence of femoral nuclei is a protective factor although its absence does not have a predictive value in the pathology.
Palavras-chave : Dysplasia of the development of hips; risk factors.