The opposite hip in congenital dislocation of the hip

A retrospective study of the development of the hip opposite a congenitally dislocated hip was carried out to identify at an early age those hips which would develop abnormally. Recognised radiological measurements were used showing the development of the joints with age. The development was compared with that of a control group of normal hips. Single measurements were shown to be unreliable in predicting the development of the hip. A simple hip ratio is proposed which predicts, at an early age and with a high degree of accuracy, the developmental outcome.     

Sonography in congenital dislocation of the hip

A new technique for ultrasonic examination of the hip joint was evaluated in neonatals and infants. An anterior approach was used with the sound sector centered over the femoral head and parallel to the femoral neck. The ultrasonograms corresponded to lateral radiographs of the joint with the leg in Lorenz' first position. It was possible to evaluate the size and depth of the acetabulum and the size and position of the femoral head. The projection also permitted a dynamic examination for determination of hip instability. Thus, the technique provided a method for an objective diagnosis in congenital dislocation of the hip (CDH). In 216 hips, the results of clinical evaluation for CDH were correlated with the degree of instability demonstrated by ultrasound. The comparison showed the clinical diagnosis to be highly inaccurate.     

Late diagnosed congenital dislocation of the hip

During the years 1975 to 1979, 82,574 children from five counties in southeast Norway were live-born, 197 of whom were treated for late detected CDH, for an incidence of 2.4 per 1,000 live births, i.e., 0.4 promille dislocation, 0.6 promille subluxation, and 1.4 promille dysplasia of the acetabulum without dislocation. All the hips had been found stable at birth. Eighty-six percent were girls, and the left hip was affected in 48 percent, the right hip in 31 perent, and both hips in 21 percent. Only 6.5 percent were delivered in the breech position. This and the stability found neonatally may indicate an etiologic difference between neonatally and late diagnosed CDH.     

Sonography in congenital dislocation of the hip

A new technique for ultrasonic examination of the hip joint was evaluated in neonatals and infants. An anterior approach was used with the sound sector centered over the femoral head and parallel to the femoral neck. The ultrasonograms corresponded to lateral radiographs of the joint with the leg in Lorenz' first position. It was possible to evaluate the size and depth of the acetabulum and the size and position of the femoral head. The projection also permitted a dynamic examination for determination of hip instability. Thus, the technique provided a method for an objective diagnosis in congenital dislocation of the hip (CDH). In 216 hips, the results of clinical evaluation for CDH were correlated with the degree of instability demonstrated by ultrasound. The comparison showed the clinical diagnosis to be highly inaccurate.     

Sonography in congenital dislocation of the hip

A new technique for ultrasonic examination of the hip joint was evaluated in neonatals and infants. An anterior approach was used with the sound sector centered over the femoral head and parallel to the femoral neck. The ultrasonograms corresponded to lateral radiographs of the joint with the leg in Lorenz' first position. It was possible to evaluate the size and depth of the acetabulum and the size and position of the femoral head. The projection also permitted a dynamic examination for determination of hip instability. Thus, the technique provided a method for an objective diagnosis in congenital dislocation of the hip (CDH). In 216 hips, the results of clinical evaluation for CDH were correlated with the degree of instability demonstrated by ultrasound. The comparison showed the clinical diagnosis to be highly inaccurate.     

Late diagnosed congenital dislocation of the hip

During the years 1975 to 1979, 82 574 children from five counties in southeast Norway were live-born, 197 of whom were treated for late detected CDH. for an incidence of 2.4 per 1 000 live births, i.e., 0.4 promille dislocation. 0.6 promille subluxation, and 1.4 promille dysplasia of the acetabulum without dislocation. All the hips had been found stable at birth. Eighty-six percent were girls, and the left hip was affected in 48 percent, the right hip in 31 perent, and both hips in 21 percent. Only 6.5 percent were delivered in the breech position. This and the stability found neonatally may indicate an etiologic difference between neonatally and late diagnosed CDH.