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Risk of further surgery on the same or opposite side and mortality after primary total hip arthroplasty: A multi-state analysis of 133,654 patients from the Swedish Hip Arthroplasty Register

Artikel i vetenskaplig tidskrift
Författare Peter Cnudde
Szilard Nemes
Erik Bülow
A. J. Timperley
S. L. Whitehouse
Johan Kärrholm
Ola Rolfson
Publicerad i Acta Orthopaedica
Volym 89
Nummer/häfte 4
Sidor 386-393
ISSN 1745-3674
Publiceringsår 2018
Publicerad vid Institutionen för kliniska vetenskaper, Avdelningen för ortopedi
Sidor 386-393
Språk en
Länkar dx.doi.org/10.1080/17453674.2018.14...
Ämnesord long-term mortality, total joint arthroplasty, knee arthroplasty, danish, nationwide, surgical approach, health-care, replacement, models, osteoarthritis, dislocation, Orthopedics
Ämneskategorier Ortopedi

Sammanfattning

Background and purpose - The hip-related timeline of patients following a total hip arthroplasty (THA) can vary. Ideally patients will live their life without need for further surgery; however, some will undergo replacement on the contralateral hip and/or reoperations. We analyzed the probability of mortality and further hip-related surgery on the same or contralateral hip. Patients and methods - We performed a multi-state survival analysis on a prospectively followed cohort of 133,654 Swedish patients undergoing an elective THA between 1999 and 2012. The study used longitudinally collected information from the Swedish Hip Arthroplasty Register and administrative databases. The analysis considered the patients' sex, age, prosthesis type, surgical approach, diagnosis, comorbidities, education, and civil status. Results - During the study period patients were twice as likely to have their contralateral hip replaced than to die. However, with passing time, probabilities converged and for a patient who only had 1 non-revised THA at 10 years, there was an equal chance of receiving a second THA and dying (24%). It was 8 times more likely that the second hip would become operated with a primary THA than that the first hip would be revised. Multivariable regression analysis reinforced the influence of age at operation, sex, diagnosis, comorbidity, and socioeconomic status influencing state transition. Interpretation - Multi-state analysis can provide a comprehensive model of further states and transition probabilities after an elective THA. Information regarding the lifetime risk for bilateral surgery, revision, and death can be of value when discussing the future possible outcomes with patients, in healthcare planning, and for the healthcare, economy.

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