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Table 3 Age at primary THA according to AI arrays. Statistically significant age differences between these groups were detected (p ≤ 0.01). The one-factor analysis of variance showed a significant difference in age between the individual groups (p ≤ 0.001). On average, patients with an AI > 31° required THA more than 10 years earlier

From: Prediction of time to prosthesis implantation as a function of joint anatomy in patients with developmental dysplasia of the hip

Acetabular index

10–20°

21–30°

> 31°

Number of patients (n)

50

63

16

Mean age at THA (years)

57.9 ± 10.0

53.7 ± 11.1

45.8 ± 11.3

Range of age at THA (years)

[30 to 76]

[20 to 78]

[15 to 68]