Lifetime Risk of Primary Total Hip Replacement Surgery for Osteoarthritis From 2003 to 2013: A Multinational Analysis Using National Registry Data.
To compare the lifetime risk of total hip replacement (THR) surgery for osteoarthritis (OA) between countries, and over time.



Data on primary THR procedures performed for OA in 2003 and 2013 were extracted from national arthroplasty registries in Australia, Denmark, Finland, Norway, and Sweden. Life tables and population data were also obtained for each country. Lifetime risk of THR was calculated for 2003 and 2013 using registry, life table, and population data.



In 2003, lifetime risk of THR ranged from 8.7% (Denmark) to 15.9% (Norway) for females, and from 6.3% (Denmark) to 8.6% (Finland) for males. With the exception of females in Norway (where lifetime risk started and remained high), lifetime risk of THR increased significantly for both sexes in all countries from 2003 to 2013. In 2013, lifetime risk of THR was as high as 1 in 7 women in Norway, and 1 in 10 men in Finland. Females consistently demonstrated the highest lifetime risk of THR at both time points. Notably, lifetime risk for females in Norway was approximately double the risk for males in 2003 (females 15.9% [95% confidence interval (95% CI) 15.6-16.1], males 6.9% [95% CI 6.7-7.1]), and 2013 (females 16.0% [95% CI 15.8-16.3], males 8.3% [95% CI 8.1-8.5]).



Using representative, population-based data, this study found statistically significant increases in the lifetime risk of THR in 5 countries over a 10-year period, and substantial between-sex differences. These multinational risk estimates can inform resource planning for OA service delivery.
Monash University and University of Melbourne, Melbourne, Victoria, Australia.
Ilana N
IN
Ackerman
University of Melbourne, Melbourne, Victoria, Australia.
Megan A
MA
Bohensky
Epworth HealthCare and University of Melbourne, Melbourne, Victoria, and Australian Orthopaedic Association National Joint Replacement Registry, Adelaide, South Australia, Australia.
Richard
R
de Steiger
Monash University, Melbourne, Victoria, Australia.
Caroline A
CA
Brand
Coxa Hospital for Joint Replacement, Tampere, Finland.
Antti
A
Eskelinen
The Norwegian Arthroplasty Register, Bergen, Norway.
Anne Marie
AM
Fenstad
The Norwegian Arthroplasty Register and University of Bergen, Bergen, Norway.
Ove
O
Furnes
Australian Orthopaedic Association National Joint Replacement Registry, Adelaide, South Australia, Australia.
Stephen E
SE
Graves
Finnish Arthroplasty Register, Helsinki, Finland.
Jaason
J
Haapakoski
Turku University Hospital, Turku, and Finnish Arthroplasty Register, Helsinki, Finland.
Keijo
K
Mäkelä
Aarhus University Hospital and Danish Hip Arthroplasty Register, Aarhus, Denmark.
Frank
F
Mehnert
Swedish Hip Arthroplasty Register, Gothenburg, Sweden.
Szilard
S
Nemes
Danish Hip Arthroplasty Register, Aarhus, and Odense University Hospital and University of Southern Denmark, Odense, Denmark.
Søren
S
Overgaard
Aarhus University Hospital and Danish Hip Arthroplasty Register, Aarhus, Denmark.
Alma B
AB
Pedersen
University of Gothenburg and Swedish Hip Arthroplasty Register, Gothenburg, Sweden.
Göran
G
Garellick
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000706:statistics & numerical data / Q000639:trends*; D001315:Australia / Q000453:epidemiology; D016208:Databases, Factual / Q000706:statistics & numerical data / Q000639:trends*; D003718:Denmark / Q000453:epidemiology; D005260:Female; D005387:Finland / Q000453:epidemiology; D006801:Humans; D038622:Internationality; D008136:Longevity; D008297:Male; D008875:Middle Aged; D009664:Norway / Q000453:epidemiology; D015207:Osteoarthritis, Hip / Q000175:diagnosis / Q000453:epidemiology* / Q000601:surgery*; D012042:Registries / Q000706:statistics & numerical data; D018570:Risk Assessment / Q000639:trends; D013548:Sweden / Q000453:epidemiology