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Table 5 Factors associated with periprosthetic fractures

From: Fractures in Oxford unicompartmental knee arthroplasty are associated with a decreased medial keel-cortex distance of the tibial implant

 

Univariate analysis

Multivariate analysis

 

Odds ratio

p-Value

Odds ratio

p-Value

reKmmK

0.58 (0.49–0.71)

 < 0.001

0.60 (0.48–0.72)

 < 0.001

HkpK

0.72 (0.58–0.90)

 < 0.001

0.82 (0.64–1.01)

0.079

PTS

0.8 (0.70–0.91)

 < 0.001

0.78 (0.66–0.92)

0.003

TCPS

0.77 (0.65–0.92)

 < 0.001

0.84 (0.69–1.02)

0.075

Female sex

4.21 (1.39–12.73)

 < 0.001

2.86 (0.91–11.38)

0.095

Age

1.09 (1.03–1.16)

 < 0.001

1.09 (1.03–1.17)

0.007

Tibial component size AA

20.1 (7.4–54.8)

 < 0.001

5.67 (1.54–20.40)

0.008

  1. Variables were initially tested using a univariate analysis within a regression model to confirm their associations. Upon confirmation, all factors were subsequently included in a multivariate regression model to identify independent associations. Odds ratio is displayed with 95% confidence interval. The data were tested using the univariate and multivariate logistic regression
  2. reKmmK distance from the implant keel to the medial tibial cortex, HkpK distance from the posterior keel to the posterior cortex, PTS posterior tibial slope, TCPS tibial component posterior slope