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Table 3 Functional outcomes and radiological parameters between the two groups at the last follow-up time

From: Supramalleolar osteotomy with medial distraction arthroplasty for ankle osteoarthritis with talar tilt

 

SMOT (n = 16)

SMOT with MDA (n = 18)

P value

Functional outcomes

 AOFAS, point

77.4 ± 19.9

84.5 ± 6.7

0.163

 AOS pain, point

3.5 ± 2.3

2.4 ± 0.6

0.059

 AOS function, point

3.6 ± 2.0

2.9 ± 0.9

0.189

 ROM of ankle, degree

36.4 ± 7.6

37.8 ± 6.3

0.561

 Failure rate

18.8% (3 / 16)

0

0.094

 Takakura stage

1.9 ± 1.0

1.4 ± 0.6

0.083

Radiological parameters

 TAS

89.1 ± 2.0

89.8 ± 1.6

0.266

 TT

2.9 ± 1.7

1.8 ± 0.9

0.023

 TMM

27.7 ± 4.6

28.5 ± 6.2

0.675

 TC

77.9 ± 2.8

76.9 ± 3.7

0.386

 TLS

80.5 ± 2.3

79.5 ± 3.0

0.288

 HFA*

4.2 ± 2.6

3.1 ± 1.8

0.254

 TT not corrected

31.3% (5/16)

0

0.016

  1. SMOT supramalleolar osteotomy, MDA medial distraction arthroplasty, AOFAS American Orthopaedic Foot and Ankle Society ankle-hindfoot score, AOS the 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
  2. *The case number in SMOT group was 8, and in SMOT with MDA group was 14