Functional results of primary unilateral hip arthroplasty for arthrosis of the hip joint

In this study, the main functional characteristics of the locomotion system were analyzed before and after hip joint replacement using the Biomechanics walking research complex. Evaluation of the results of a biomechanical study of patients with hip joint pathology with hardware was based on the methodology for processing podometry, goniometry and dynamometry data, including a number of calculations and processing of the results using descriptive statistics methods. The data processing technique includes the assessment of all necessary parameters expressing the response of the locomotion system to the load and the characteristic of mobility in the hip joints. Total hip arthroplasty makes walking more symmetrical and reduces lameness, making it hidden. In 42 % of cases, the limb on the side of the endoprosthetics remained in support. Dynamic supportability within 14 months after arthroplasty is restored to the lower limits of the norm. The mobility of the prosthetic hip joint improves for 20 months, but does not reach normal values. Observation of the restoration of the angular displacement velocities in the hip joint showed their double increase during the first 14 months after the operation. The results of the study require further reflection to develop practical recommendations for the surgical treatment of patients with coxarthrosis and their subsequent rehabilitation. Based on the data obtained, it can be concluded that the hip joint endoprosthetics are appropriate for patients at an earlier stage of coxarthrosis, before they develop severe anatomical and functional changes