Relevance. A differentiated approach to pelvic and proximal femur osteotomy in hip disease among patients with cerebral palsy is a relevant subject of study. The aim of the study. Diagnostic improvement in diseases of the hip joints in cerebral palsy to create a differentiated approach to the reconstruction of the pelvis and proximal femur osteotomy based upon mathematical modeling. Materials and methods. The total number of patients was 33 patients (60 joints). We conducted a clinical and radiographic examination of the hip joints using our own method and standard anterior-posterior radiographs, determining the parameters of the hip joint. Mathematical modeling of indications for proximal femur osteotomy and combination of pelvic and proximal femur osteotomy using logistic regression was also performed. A mathematical model entitled "Probability of indications for pelvic and proximal femur osteotomy " based upon acetabular angle (AA), Reimers' index (RI), GMFCS level and ambulation for both positionings was developed. We have offered a mathematical model for determining indications for pelvic and hip osteotomy in hip joint diseases among children with cerebral palsy for a standard anterior-posterior radiograph based upon AA, RI, GMFCS level and ambulation with a model accuracy 91.1%. The critical level of indicators in which indications for pelvic and proximal femur osteotomy are detected is for AA > 23.55 ̊, for RI > 34%.

Relevance: Obtaining true radiographic parameters of the hip joint helps to choose therapeutic tactics for children with cerebral palsy. Goal of the study: Improvement of the diagnostic results in pathology of the hip joint among patients with cerebral palsy by using our original method. Materials and methods: The number of examined patients – 30 persons (60 joints), 15 boys and 15 girls, 26 joints were operated. The age of patients ranged between 3-15 years. All patients underwent a clinical evaluation – Ruwe's femoral torsion, as well as radiography of the hip joints using our original method (utility model patent №137567). The offered method is cheap, simple and accessible to all medical institutions with an X-ray room, for the diagnosis and screening of pathology of the hip joint. The our original method can be used to determine all the main parameters of the hip joint (femoral torsion, neck-shaft angle, Viberg angle, Reimers’ index, acetabular angle, Sharp’s angle) in patients with cerebral palsy. Making only single radiograph, one obtains true radiographic parameters of both hip joints, which significantly reduces the radiation load upon the patient. Our method can be used in the examination and screening of patients with developmental disorders and other diseases of the hip joint.

Introduction. The influence of the gait on the hip joint formation in patients with infantile cerebral palsy (CP) is an actual object of scientific research. The purpose of the research was to study the correlations between walking and clinical and roentge­nometric parameters of the hip joint in the patients with CP. Materials and methods. There were examined 39 patients with CP and pathology of the hip joints (70 joints), who had been treated at the National Research Institute of Traumatology and Orthopedics for the period from 2018 to 2022. The patients had been divided into 2 groups depending on the ability to walk. We had performed a clinical and roentgenogramometric examination of the hip joints in positioning according to our own method and the standard anterior-posterior radiological position. All patients underwent a clinical assessment of femoral torsion using the Ruwe method. To assess the relationships between the studied indices Spearman's correlation analysis was performed. Results. The positive influence of gait on the hip joint formation had been revealed. The average va­lues of the hip clinical and roentgenometric parameters in patients with CP who do not walk were significantly higher compared to those of subjects who walk. Correlation analysis revealed the relationship between walking and the studied parameters of the hip joint (cervical-diaphyseal angle, femoral torsion, acetabular angle, Sharp angle, Reimers index, the center edge angle of Wiberg) in both settings, as well as walking and other factors (age, level lesion, GMFCS scale (II-IV level), congenital dysplasia of the hip joints in the history). At the same time, there was no found any dependence between gait and adductor myotomy in the history. Conclusions. A significant influence of the gait on the following para­meters of the hip joint was established: the true cervical-diaphyseal angle (p = 0.00001) in positioning according to our own me­thod, femoral torsion (p = 0.01), acetabular angle (standard setting) (p = 0.00001), Sharpe angle (standard setting) (p = 0.018), Reimers index (standard setting) (p = 0.00007), center edge angle of Wiberg (standard setting) (p = 0.001) and lack of statistical signi­ficance of the influence of the adductor myotomy factor in history (p = 0.11) on the walking function.

elevance. Significant incidence of hip pathology in different groups of patients with cerebral palsy and factors that may affect their formation are the actual object of the study. The goal of the study. To establish clinical and radiological morphometric dependences influencing the formation of acetabular indices in patients with cerebral palsy. Materials and methods. The total number of patients was 47 persons (86 joints). We examined patients using our own method (Ukrainian patent №137567), calculated the acetabular angle and Sharp's angle, as well as performed a statistical analysis of factors that may have influenced their formation. Results. Significant inter-age differences between acetabular angle and Sharp’s angle were found. Statistically insignificant differences according to the Gross Motor Function Classification System (GMFCS), gait function, level of injury, congenital hip dysplasia and myotomy of adductors in the medical history were revealed. Conclusions. Established statistically insignificant differences may indicate that the development of the acetabulum in patients with cerebral palsy occurs independently and correlates only with age, and its pathology is evidenced by true radiographic parameters.