About the methodology of investigation of hip replacement

Oleksandr Oleynik


The quantity of complications after hip replacement still remains significant (8–15 %) despite the great amount of scientific working-out and huge clinical experience. Goal: to produce methodological supplies of the investigation of hip replacement for its further improvement. Results: maintaining of long-term stability of endoprothesis related to the choice of appropriate implant design, categorization of its criteria and prediction of implants influence on joint elements. Traditionally the technique of operation is chosen according to the stage of disease. In the case of joint replacement some contradiction appears: the endoprothesis’ with different design are used on the same stage of disease. The specialists face the same problem during the differential choice of implant and algorithmic selection. So, it’s quite obvious, that taking into consideration just the stage of disease reduces the value of attempt of full-scale analysis of the efficacy of long-term functioning of endoprothesis, and efficacy of algorithmic choice of implant. New methodological form should be put in the methodology of joint replacement, that significantly enlarge the possibilities of description of hip pathological changes within the frame of existing diseases’ classification. Lets call this form as «morphoimplantation group» that combine clustered morphological changes in joint elements of hip and clinical criteria in the frame of classification of pathological process, that determine the choice of implant element. The forming of morphoimplantation groups defines the type of implant module according to particular case. The combination of morphoimplantation groups within the frame of disease stage classification determines the variations of using of implant modules. Conclusion: the use of morphoimplantation group as a methodological approach to the choice hip endoprothesis design will help to systemize and algorithmize the choice of implant that will lead the prediction of endoprosthesis behavior on new level and provide its long-term functioning.


joint replacement; hip joint; morphoimplantation group; prediction


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