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Selected Publication:
Butter, S.
Are the current radiological parameters to evaluate the growing hip still up-to-date?
Humanmedizin; [ Diplomarbeit ] Medizinische Universität Graz; 2021. pp. 73
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- Authors Med Uni Graz:
- Advisor:
- Kraus Tanja
- Tschauner Sebastian
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- Abstract:
- Background: The aim of this diploma thesis was to answer whether the current radiological parameters to evaluate the growing hip are still up-to-date. The currently existing values, which were collected from a very small group of patients and are still in daily use by pediatric orthopedists, are already several decades old. The purpose of this work is to measure current pelvic radiographs of the pediatric hip according to age, compare them with existing hip parameters used in clinical practice (acetabular angle (AC angle), center-edge angle (CE angle), Reimer’s migration index (MI)) and to evaluate the validity of this data. Patients and Methods: All patients between 0 and 18 years of age who presented with a healthy hip were included in the study. Existing pelvic radiographs of 3786 patients, acquired between 2006 and 2018, were used for data collection. A total of 1774 radiographs were suitable for further evaluation. To calculate the hip-specific parameters, key points were marked on X-ray images on a computer using the image analysis platform "Supervisely", which automatically determined the parameters after completion of the markings. The following data analysis was performed using descriptive statistics. Results: After completion of the selection process, a total of 1774 radiographs remained for further evaluation, of which 666 could be assigned to female and 1108 to male patients. The average age of the girls was 9,11 years, while the average age of the boys was 9,28 years. After their calculation, both the acetabular angle and the center-edge angle were found to be comparable to the existing data. The angles of each age group were within the given norm and could therefore be classified as physiological. In all but two age groups, the values of Reimer's migration index were within the physiological norm (0-10%). There was a exceedance of the threshold of 0,1% and 0,3% upwards in the age groups "15 - 15,99" and "16 – 16,99". Discussion: The present study confirms that the current radiological parameters to evaluate the growing hip regarding the acetabular angle and the center-edge angle are still valid and should maintain their use in clinical practice. Reimer's migration index scores were slightly elevated in two age groups. This can be further clarified in a study with a larger number of patients. However, for the remaining age groups, the migration index was found to be physiological, implying that the use of the migration index remains relevant in the clinical setting.