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Table 2 Pre-operative radiographic measurements of femoral geometry based on trochanter grade

From: Greater trochanter morphology and association with patient demographics, surgical factors, and post-operative stem position: a retrospective assessment of 150 cementless THRs in 135 dogs

 

I

II

III

IV

All

P value

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Mean

SD

 

aLDFA (°)

94.1

3.5

95.1

3.4

95.4

4.6

91.0

6.2

94.7

4.0

0.04*

Inclination (°)

128.3

8.2

127.4

5.9

125.6

8.5

117.7

10.5

126.7

7.8

0.01*

FTA (°)

39.1

12.4

38.4

8.8

39.3

9.6

34.3

8.0

38.7

10.1

0.71

CFI (ratio)

1.96

0.27

1.81

0.21

1.73

0.19

1.53

0.27

1.79

0.24

0.002*

1/CTR

2.84

0.48

2.93

0.74

3.08

0.66

3.51

0.67

2.97

0.66

0.07^

  1. Key: aLDFA anatomic lateral distal femoral angle, CFI canal flare index, FTA femoral torsion angle, 1/CTR inverse of cortical thickness ratio
  2. *: significant difference found in ANOVA, then followed by Scheffe’s post hoc test. aLDFA: no significant differences between any specific pairs. Inclination: Grades I and II different from Grade IV. CFI: Grade I and II different from grade IV
  3. ^Inverse CTR (inverted because of data distribution before transformation)