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Table 6 Alignment of the cup and stem of the femoral head

From: Total hip arthroplasty after failed transtrochanteric rotational osteotomy for osteonecrosis of the femoral head: analysis of three-dimensional morphological features

Characteristic

TRO group

Control group

p value

Mean cup inclination (SD)

36.8° (5.6°)

42.1° (5.7°)

 < 0.01*

Mean cup anteversion (SD)

14.9° (5.0°)

12.6° (5.9°)

0.23

Mean stem anteversion (SD)

18.3° (11.1°)

20.5° (18.9°)

0.71

Varus alignment > 3°, n

3

1

 < 0.01*

Valgus alignment > 3°, n

4

0

Extended alignment > 3°, n

2

2

0.23

Flexed alignment > 3°, n

3

1

 
  1. SD Standard deviation, TRO Transtrochanteric rotational osteotomy
  2. *Statistically significant