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Multicenter Study
. 2016 Dec;87(6):546-553.
doi: 10.1080/17453674.2016.1222804. Epub 2016 Aug 23.

Implant survival of the most common cemented total hip devices from the Nordic Arthroplasty Register Association database

Mika Junnila  1 , Inari Laaksonen  1 , Antti Eskelinen  2   3 , Pekka Pulkkinen  4 , Leif Ivar Havelin  5   6 , Ove Furnes  5   6 , Anne Marie Fenstad  5 , Alma B Pedersen  7   8 , Søren Overgaard  9   8 , Johan Kärrholm  10 , Göran Garellick  10 , Henrik Malchau  10   11   12 , Keijo T Mäkelä  1   3
Affiliations
Multicenter Study

Implant survival of the most common cemented total hip devices from the Nordic Arthroplasty Register Association database

Mika Junnila et al. Acta Orthop. 2016 Dec.

Abstract

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), Müller (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 Müller, MS 30, CPT, and C-stem THAs was above the acceptable limit for 10-year survival.

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