A1 Refereed original research article in a scientific journal
Implant survival of the most common cemented total hip devices from the Nordic Arthroplasty Register Association database
Authors: Junnila M, Laaksonen I, Eskelinen A, Pulkkinen P, Havelin LI, Furnes O, Fenstad AM, Pedersen AB, Overgaard S, Kärrholm J, Garellick G, Malchau H, Mäkelä KT
Publisher: TAYLOR & FRANCIS LTD
Publication year: 2016
Journal:Acta Orthopaedica
Journal name in sourceACTA ORTHOPAEDICA
Journal acronym: ACTA ORTHOP
Volume: 87
Issue: 6
First page : 546
Last page: 553
Number of pages: 8
ISSN: 1745-3674
eISSN: 1745-3682
DOI: https://doi.org/10.1080/17453674.2016.1222804
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/17872729
Background and purpose According to previous Nordic Arthroplasty Register Association (NARA) data, the 10-year implant survival of cemented total hip arthroplasties (THAs) is 94% in patients aged 65-74 and 96% in patients aged 75 or more. Here we report a brand-level comparison of cemented THA based on the NARA database, which has not been done previously.Patients and methods We determined the rate of implant survival of the 9 most common cemented THAs in the NARA database. We used Kaplan-Meier analysis with 95% CI to study implant survival at 10 and 15 years, and Cox multiple regression to assess survival and hazard ratios (HRs), with revision for any reason as endpoint and with adjustment for age, sex, diagnosis, and femoral head material.Results Spectron EF THA (89.9% (CI: 89.3-90.5)) and Elite THA (89.8% (CI: 89.0-90.6)) had the lowest 10-year survivorship. Lubinus (95.7% survival, CI: 95.5-95.9), MS 30 (96.6%, CI: 95.8-97.4), and C-stem THA (95.8%, CI: 94.8-96.8) had a 10-year survivorship of at least 95%. Lubinus (revision risk (RR)=0.77, CI: 0.73-0.81), Muller (RR =0.83, CI: 0.70-0.99), MS-30 (RR =0.73, CI: 0.63-0.86), C-stem (RR =0.70, CI: 0.55-0.90), and Exeter Duration THA (RR =0.84, CI: 0.77-0.90) had a lower risk of revision than Charnley THA, the reference implant.Interpretation The Spectron EF THA and the Elite THA had a lower implant survival than the Charnley, Exeter, and Lubinus THAs. Implant survival of the Muller, MS 30, CPT, and C-stem THAs was above the acceptable limit for 10-year survival.
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