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Table 2 Clinical and radiological features of rapidly progressive osteoarthritis of 81 hips. Values are represented as mean ± standard deviation

From: Rapidly progressive osteoarthritis of hip: establishing and validating diagnostic criteria in the Southeast Asian population

 

RPOA

Dysplasia

OA

AVN

Age at operation

72.1 ± 7.80

62.6 ± 6.27

(P = 0.001*)

67.4 ± 11.7

(P = 0.208)

55.1 ± 9.51

(P = 0.000*)

Sex (Male: Female)

6: 10

3: 12

(P = 0.433)

3: 11

(P = 0.440)

19: 8

(P = 0.055)

Side (Left: Right)

7: 11

9: 9

(P = 0.738)

6: 9

(P = 1.000)

17: 13

(P = 0.372)

LLD on initial film (mm)

1.67 ± 2.74

8.29 ± 7.23

(P = 0.002*)

3.05 ± 3.53

(P = 0.255)

5.53 ± 5.07

(P = 0.009*)

LLD on final film (mm)

21.5 ± 9.37

12.6 ± 11.6

(P = 0.016*)

6.14 ± 3.48

(P = 0.000*)

7.98 ± 7.49

(P = 0.000*)

Pelvic tilt

0.485 ± 0.133

0.638 ± 0.092

(P = 0.001*)

0.597 ± 0.129

(P = 0.023*)

0.637 ± 0.090

(P = 0.000*)

Wiberg angle (degree)

36.4 ± 8.84

14.9 ± 5.65

(P = 0.000*)

34.4 ± 7.08

(P = 0.487)

38.1 ± 6.84

(P = 0.470)

Tonnis angle (degree)

8.35 ± 3.35

16.6 ± 4.91

(P = 0.000*)

5.27 ± 4.96

(P = 0.046*)

4.23 ± 4.08

(P = 0.001*)

  1. LLD leg length discrepancy, OA osteoarthritis, AVN avascular necrosis
  2. *: statistically significant