# Trends and predictors of cemented fixation in arthroplasty for patients with a hip fracture: a Canadian Joint Replacement Registry study

## TL;DR

This study examines how often surgeons use cemented fixation during hip fracture surgeries in Canada and finds that high-volume hospitals and surgeons are less likely to use cement.

## Contribution

The study identifies trends and predictors of cemented fixation use in hip fracture arthroplasty using national registry data.

## Key findings

- High-volume hospitals are significantly less likely to use cemented fixation compared to low-volume hospitals.
- The proportion of cemented fixation in hemiarthroplasty increased over the study period compared to total hip arthroplasty.
- Cemented fixation is more common in older patients and in hemiarthroplasty procedures.

## Abstract

Cemented fixation is widely recommended during arthroplasty for hip fractures, yet it has not been universally adopted by all surgeons and hospitals. We aimed to identify which factors were associated with a higher likelihood of cemented fixation.

We identified patients ≥ 55 years old with hip fractures treated with primary arthroplasty in Canada between 2012 and 2022. We determined fixation method along with several surgeon and hospital characteristics from the Canadian Joint Replacement Registry and other Canadian databases. We used logistic regression to estimate the odds ratios (ORs) of the association between these covariates and cemented fixation.

We identified 65,823 patients who underwent arthroplasty for hip fractures. The proportion of cases with cemented fixation for hemiarthroplasty increased by 30 percentage points over the study period; the proportion for total hip arthroplasty (THA) remained relatively stable. High-volume hospitals (≥ 500 annual hip arthroplasties with ≥ 25% of these for fractures) were least likely to cement, OR = 0.30; 95% confidence interval (CI) 0.27–0.34 vs low-volume hospitals (< 500 cases/< 25% for fractures). High volume surgeons (≥ 50 hips/year, ≥ 16/year for fractures) had an OR of 0.80 (CI 0.75–0.84) compared with < 50 hips/year surgeons. Teaching hospitals were more likely to cement, OR = 1.16 (CI 1.10–1.22). The OR of cemented fixation for hemiarthroplasty (vs THA) rose from 1.13 (CI 0.99–1.29) at the start of the study period to 2.17 (CI 2.02–2.33) at the end.

The use of cemented fixation in hip fracture arthroplasty has increased across Canada over the last decade. However, surgeons and hospitals that treat more hip fracture patients are less likely to cement. The proportion of cemented fixation increases with patient age. Cement use is more common in hemiarthroplasty than in THA.