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Table 2 Comparison of the preoperative and last follow-up time functional outcomes and radiological parameters

From: Fibular osteotomy is helpful for talar reduction in the treatment of varus ankle osteoarthritis with supramalleolar osteotomy

 

SMOT (n = 39)

P value

SMOT with FO (n = 24)

P value

Preoperation

Last follow-up

Preoperation

Last follow-up

Functional outcomes

AOFAS, point

50.5 ± 11.2

79.1 ± 12.4

0.000

48.2 ± 14.4

83.2 ± 10.3

0.000

AOS pain, point

5.7 ± 0.9

2.9 ± 1.1

0.000

5.6 ± 1.0

2.6 ± 0.9

0.000

AOS function, point

6.1 ± 0.9

3.0 ± 1.3

0.000

5.7 ± 1.1

2.9 ± 1.2

0.000

ROM of ankle, degree

40.1 ± 8.4

36.5 ± 4.7

0.022

37.8 ± 9.2

39.3 ± 7.4

0.537

Takakura stage 1/2/3a/3b/4

0/7/16/15/1

26/9/2/2/0

0.000

0/2/9/12/1

19/3/1/1/0

0.000

Radiological parameters

TAS, degree

81.8 ± 4.1

89.0 ± 3.3

0.000

80.1 ± 3.5

89.9 ± 2.8

0.000

TT, degree

6.9 ± 4.7

2.6 ± 1.4

0.000

7.1 ± 4.9

1.9 ± 0.9

0.000

TMM, degree

34.4 ± 6.7

26.5 ± 3.6

0.000

33.7 ± 5.7

28.1 ± 5.5

0.001

TC, degree

70.2 ± 3.9

76.9 ± 4.5

0.000

68.7 ± 4.3

78.6 ± 4.1

0.000

TLS, degree

75.2 ± 3.2

79.7 ± 2.9

0.000

74.3 ± 3.8

80.9 ± 1.8

0.000

HFAa, degree

14.8 ± 3.4

4.1 ± 2.0

0.000

15.9 ± 5.1

2.9 ± 1.4

0.000

TFCS, mm

2.9 ± 0.5

4.2 ± 1.1

0.000

2.8 ± 0.6

3.2 ± 0.8

0.056

MDT, mm

6.2 ± 2.0

3.1 ± 1.6

0.000

7.2 ± 2.2

1.9 ± 1.7

0.000

  1. SMOT, Supramalleolar osteotomy; FO, fibular osteotomy; AOFAS, the American Orthopaedic Foot and Ankle Society ankle-hindfoot score; AOS, Ankle Osteoarthritis Scale; ROM, range of motion; TAS, tibial articular surface angle; TT, talar tilt angle; TMM, tibial medial malleolar angle; TC, tibiocrural angle; TLS, tibial lateral surface angle; HFA, hindfoot alignment angle; TFCS, tibiofibular clear space; MDT, medial displacement of talus
  2. aThe case number in SMOT group was 21, and in SMOT with FO group was 17