Foot & Ankle International - June 2017 - 631

Cho et al

631

Table 3. Results of the Assessment of Muscle Strengths Using Isokinetic Dynamometer at Final Follow-up (Wilcoxon Signed-Rank
Test).
Peak Torque (Nm)
60 degrees/sec angular velosity
Dorsiflexion
Plantarflexion
Inversion
Eversion
90 degrees/sec angular velosity
Dorsiflexion
Plantarflexion
Inversion
Eversion

Operated Sidea

Contralateral Sidea

Mean Deficit Ratio, %

P Value

7.1 ± 2.8
39.2 ± 14.5
9.8 ± 4.6
7.3 ± 3.4

20.5 ± 5.4
58.3 ± 14.8
15.5 ± 5.1
12.8 ± 4.2

65.4
32.8
36.8
42.9

<.001
<.001
<.001
<.001

5.7 ± 2.3
32.5 ± 13.6
7.4 ± 3.1
6.2 ± 2.8

18.1 ± 5.3
51.2 ± 13.9
12.8 ± 4.5
10.9 ± 3.8

68.5
36.5
42.2
43.1

<.001
<.001
<.001
<.001

a

Values are mean and standard deviation.

Table 4. Radiographic Evaluation Regarding the Changes of Postoperative Foot Alignment (Wilcoxon Signed-Rank Test).
Radiographic Measurement
Meary angle (degrees)
Calcaneal pitch angle (degrees)
Hindfoot alignment angle (degrees)
Navicular height (mm)

Preoperativea

Postoperative 1 ya

-1.4 ± 6.1c
22.1 ± 4.3
4.8 ± 2.5
30.1 ± 3.2

-0.5 ± 5.8c
22.4 ± 3.9
4.5 ± 2.7
29.7 ± 2.8

Final Follow-upa
-0.8 ± 5.5c
21.8 ± 3.8
5.1 ± 3.2
29.6 ± 3.1

P Valueb
.875
.905
.798
.722

a

Values are mean and standard deviation.
Comparison between data at preoperative and postoperative final follow-up.
c
Negative value indicates the foot was in a planus position.
b

Table 5. Comparison of Functional and Radiologic Outcomes With Control Group at Final Follow-up (Mann-Whitney Test).
Functional Evaluation
AOFAS scores
FAOS
FAAM scores
Active dorsiflexion (degrees)
Active plantarflexion (degrees)
Active inversion (degrees)
Active eversion (degrees)
Power grade of dorsiflexors
Power grade of plantarflexors
Peak torque of dorsiflexors (Nm)
Peak torque of plantarflexors (Nm)
Peak torque of invertors (Nm)
Peak torque of evertors (Nm)
Meary angle (degrees)
Calcaneal pitch angle (degrees)
Hindfoot alignment angle (degrees)

Foot Drop Groupa
86.2 ± 11.4
87.8 ± 8.5
84.4 ± 8.3
11.8 ± 4.4
33.5 ± 6.1
25.9 ± 4.2
13.7 ± 5.1
3.9 ± 0.8
4.4 ± 0.5
7.1 ± 2.8
39.2 ± 14.5
9.8 ± 4.6
7.3 ± 3.4
-0.8 ± 5.5
21.8 ± 3.8
5.1 ± 3.2

Control Groupa
97.3 ± 3.5
96.6 ± 2.4
95.9 ± 3.8
19.2 ± 2.3
39.4 ± 1.9
33.1 ± 2.8
22.9 ± 3.1
4.8 ± 0.3
4.7 ± 0.4
21.5 ± 5.6
61.3 ± 14.4
16.8 ± 4.8
13.2 ± 3.9
-0.2 ± 3.5
22.5 ± 3.4
4.4 ± 2.6

P Value
<.001
.015
.003
<.001
.009
<.001
<.001
<.001
.385
<.001
<.001
<.001
<.001
.858
.711
.295

Abbreviations: AOFAS, American Orthopaedic Foot & Ankle Society ankle-hindfoot scores; FAAM, Foot and Ankle Ability Measure; FAOS, Foot and
Ankle Outcome Score.
a
Values are mean and standard deviation.

for footdrop is known to be careful patient selection by
thorough preoperative examination.16 In terms of operative
technique, several modifications and improvements have

been made to the original technique.2,3,4,6,8,15 Jeng and
Myerson5 have reported that the harvest of maximal tendon
length, the use of subcutaneous course to prevent potential
Table of Contents for the Digital Edition of Foot & Ankle International - June 2017
