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Table 2 Comparison and analysis of different index of patients with different degrees of hallux valgus between congruency and incongruency groups

From: Radiographic evaluation of congruency of the first metatarsophalangeal joint in hallux valgus

Groups

Index

Congruency

Incongruency

T value

P value

Mild

HVA (°)

23.60 ± 4.00

26.78 ± 2.88

− 4.172

0.000

MTPJA (°)

7.41 ± 3.99

13.23 ± 6.58

− 3.744

0.001

DMAA (°)

11.27 ± 5.69

14.20 ± 6.22

− 1.350

0.179

CI

0.86 ± 0.06

0.78 ± 0.07

5.071

0.000

TSP

3.55 ± 1.55

5.74 ± 0.81

− 9.265

0.000

Moderate

HVA (°)

32.98 ± 2.54

34.39 ± 2.86

− 2.329

0.022

MTPJA (°)

7.57 ± 4.72

17.73 ± 6.05

− 8.309

0.000

DMAA (°)

22.04 ± 7.77

16.22 ± 5.54

3.888

0.000

CI

0.85 ± 0.06

0.75 ± 0.08

6.932

0.000

TSP

4.37 ± 1.85

5.86 ± 1.09

− 4.320

0.000

Severe

HVA (°)

43.98 ± 1.89

47.30 ± 5.06

− 1.803

0.081

MTPJA (°)

4.90 ± 3.32

29.12 ± 10.42

− 6.415

0.000

DMAA (°)

32.45 ± 5.04

18.79 ± 10.00

5.154

0.000

CI

0.80 ± 0.05

0.61 ± 0.15

5.925

0.000

TSP

5.50 ± 1.41

6.27 ± 0.92

− 1.447

0.182

  1. HVA hallux valgus angle, DMAA distal metatarsal articular angle, MTPJA the first metatarsophalangeal joint angle, CI congruency index, TSP tibial sesamoid position