On 6 October at 15:00 in an open meeting of the Medical Promotion Council of Rīga Stradiņš University which will take place in the Hippocrates lecture theatre, Rīga, 16 Dzirciema Str., Oksana Koļesova will defend her doctoral thesis “The Sexual Dimorphism and Age-Related Changes of the Lesser Pelvis in Human”.
Doctoral thesis focuses on three basic aspects: sexual dimorphism of the pelvis, prognosis of the narrowest pelvic place and aging tendencies.
The present thesis significantly differs from other researches on the gender-related differences of pelvic parameters in bone collections, as the sample for the detection of parameters of pelvic cavity consists of 329 subjects, and 3D computed tomography bone reconstruction was used in the research.
As the results of the research demonstrate, sexual dimorphism of the lesser pelvis manifests itself unevenly in different pelvic levels. The author has identified a parameter according to which variance in females is higher than in males. Measures of the narrowest place of the pelvic cavity demonstrate a closer relationship with other measures of the lesser pelvis than with those of the greater pelvis. Besides, this relationship is closer in female than in male.
The thesis also focuses on age-related differences of pelvis. The author demonstrates the tendencies in the change of measures that point to the possible pelvic deformations during lifetime. Though, there are observed common aging trends in the pelvic architecture. The results show that the only parameter that does not depend on age is transverse diameter of the pelvic cavity at the level of the hip joint centres.