Clinical Observations On The Effect Of Dynamic Treatment Of Developmental Dislocation Of The Hip By Aluminium Plate After Manual Close Reduction

Objective: To study the effect of dynamic treatment of Developmental Dislocation of the Hip by aluminium plate after manual close reduction and the morphological development of acetabulum and the proximal end of femur. Methods: All the cases were divided into three groups, group 1 belonged to the age range of one year, group 2, 1~2 years, and group 3, over 2 years. A series of X-ray films taken over 18 months' interval of 63 cases (63 hips) were categorized into 4 periods and reviewed. The acetabular index (AI) and femoral neck anteversion(FNA) were measured. Results: From all the data, lesional AI decreased from 34.92皌o 23.39?with a reduction of 11.53癮fter 18 months treatment and averaging of 0.64皃er month; FNA decreased from 53.48?to 35.42?after 12 months treatment, with a reduction of 18.06?and averaging of 1.51?per month. All the changes occurred at a faster rate than the normal side. AI of the lesional acetabulum of each group also decreased at a faster rate than the normal side. The totally effective rate amounts to 92.06% and each group amounts to 100%?89% and 70% respectively. Conclusions: It's an effective method for the treatment of DDH based on the primary theory of TCM about orthopaedics, and this method can accelerate growth of the Acetabulum and the proximalend of femur. Reduction of femoral head is instrumental in irritating the changes of AI and FNA. The AI of the lesional acetabulum decreased in each group and the results were closed related with the basic figure and the age factor before the commencement of the treatment. So the treatment in early phase is supported.