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Periprosthetic fractures in total hip arthroplasty: an epidemiologic study
Roope Sarvilinna1, Heini S A Huhtala, Timo J S Puolakka
1Medical School, University of Tampere, Tampere, Finland.
Insights
This study analyzed hip arthroplasty data from Finland, finding fewer periprosthetic fractures in later years. Gender, prosthesis type, and age did not significantly impact fracture risk.
Area of Science:
- Orthopedic Surgery
- Biostatistics
- Epidemiology
Background:
- Periprosthetic fractures are a significant complication following hip arthroplasty.
- Understanding risk factors is crucial for improving patient outcomes and implant design.
Purpose of the Study:
- To compare the incidence of periprosthetic fractures among the six most used femoral components in primary hip arthroplasties.
- To identify risk factors associated with periprosthetic fractures.
Main Methods:
- Analysis of 33,154 primary hip arthroplasties performed between 1990 and 1999 from the Finnish Arthroplasty Register.
- Survival analysis and Cox's regression model were used to assess risk factors.
- Incidence rates were calculated for two distinct periods (1990-1994 and 1995-1999).
Main Results:
- The incidence of periprosthetic fractures decreased from the period 1990-1994 to 1995-1999.
- No statistically significant association was found between gender, prosthesis type, or age and the risk of periprosthetic fractures.
Conclusions:
- The study suggests a declining trend in periprosthetic fracture incidence over the observed decade.
- Identified risk factors like gender, prosthesis type, and age were not significant predictors of periprosthetic fractures in this cohort.
Abstract:
This study was based on data from the Finnish Arthroplasty Register. From 1990 to 1999, 33,154 primary hip arthroplasties were performed in Finland. Only periprosthetic fractures treated by a revision arthroplasty were registered. The six most used femoral components were compared using survival analysis and Cox's regression model. The incidence of periprosthetic fractures was calculated separately for the years 1990-1994 and 1995-1999. The incidence in the first period was greater than in the latter. Survival analysis and Cox's regression model showed that gender, prosthesis type and age were of no significance as risk factors for periprosthetic fractures.
