INCREASED INCIDENCE OF DEVELOPMENTAL DYSP LASIA OF THE HIP IN LARGE-FOR-GESTATIONAL-AGE NEWBORN

''Lack of space'' in utero is considered to be a major factor in the a etiology of the congenital dislocation of the hip. This study tries to answer the question whether hypertrophy of a newborn has to be regard ed as a risk factor on the basis of the principle mentioned above. The results of postnatal clinical and sonographical examination performed on 98 large-for-gestational-age (LGA-) newborn were compared to those performed on 310 newborn children during a non selective screening pr ogram. Among the LGA-newborn pathological hip joints were found more o ften; mainly female LGA-newborn infants were affected. It seemed that the birth weight did not correlate to the extent of the retardation of the hip joint development. It was again confirmed that the restrictio n to only clinical diagnostic procedures in the neonatal period is not effective in the early diagnosis of the malformation. Hypertrophy of a newborn has to be considered as a risk factor behind the development of congenital dislocation of the hip. It is recommended to examine al l LGA-newborn infants post partum by clinical and most importantly als o by sonographical means to recognize a retardation of hip joint devel opment.