Risk factors for total hip arthroplasty dislocations

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Purpose: to identify risk factors of dislocation after total hip arthroplasties and to suggest a model to determine the probability of occurrence of this complication in every patient. Material and methods: since 2000 till 2010 2569 primary and 319 total hip revisions were performed in 2409 patients. The age of patients varied from 15 to 92, average - 58,5. Women were 1582 (65,68%). All procedures were made through the posterior approach (Kocher-Langenbeck). Results: there were 136 dislocations. The authors analyzed three groups of risk factors: 1) related with patient; 2) depending on surgeon; 3) associated with implant design. Most important risk factors were found by the method of logistic regression: age, gender, diagnose, surgeon, cup-to-head ratio. The authors suggested the predictive model of probable dislocation.

About the authors

M. A. Molodov

Yaroslavl Regional Hospital for War Veterans - International Centre for the elderly “Healthy Longevity”

Author for correspondence.
Email: mihamolodov@rambler.ru
Russian Federation

V. V. Danilyak

Yaroslavl Regional Hospital for War Veterans - International Centre for the elderly “Healthy Longevity”

Email: v-danilyak@mail.ru
Russian Federation

V. V. Kluchevsky

Yaroslavl State Medical Academy

Email: noemail@neicon.ru
Russian Federation

S. I. Gilfanov

Yaroslavl State Medical Academy

Email: gilfanov63@rambler.ru
Russian Federation

V. V. Kluchevsky

Yaroslavl Regional Hospital for War Veterans - International Centre for the elderly “Healthy Longevity”; Yaroslavl State Medical Academy

Email: noemail@neicon.ru
Russian Federation

A. A. Vergay

Yaroslavl State Medical Academy

Email: sashavergay@mail.ru
Russian Federation


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