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Table 1 Absolute and relative changes of bone mineral density by modified DeLee and Charnley zone and follow-up time point, expressed as means (standard deviations)

From: Peri-acetabular bone remodelling after uncemented total hip arthroplasty with monoblock press-fit cups: an observational study

DeLee and Charnley zone

3 months

12 months

24 months

P valuea

 

Absolute change (g/cm2)

Relative change (%)

Absolute change (g/cm2)

Relative change (%)

Absolute change (g/cm2)

Relative change (%)

 

I

−0.4 (0.3)

−19.0 (9.0)

−0.4 (0.3)

−18.0 (13.0)

− 0.4 (0.3)

−17.1 (11.0)

<  0.0001

II

−0.3 (0.4)

−13.1 (19.0)

− 0.2 (0.6)

− 8.0 (30.0)

− 0.1 (0.6)

−4.0 (29.0)

0.171

III

− 0.3 (0.1)

−17.0 (9.0)

− 0.3 (0.2)

−16.0 (10.3)

− 0.2 (0.3)

− 15.1 (17.0)

<  0.0001

  1. aDifference to baseline at 24-month follow-up examination