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Table 3 Radiographic parameters

From: Comparative study of subtalar arthrodesis after calcaneal frature malunion with autologous bone graft or freeze-dried xenograft

Group

X-ray

TC height*

Calcaneal width

CF angle* ††

TC angle* ††

TFM angle* ††

Talar tilt angle ††

Autograft

Contralateral

67 (63.5/69.75) [p = 0.18]¶

31.5 (22.5/34.75)

17 (12.25/22.5) [p = 0.11]

41 (32.5/49.5) [p = 0.11]

3 (−6.25/10) [p = 0.18]

21.5 (15.75/28.75) [p = 1.0]

Preoperative

64 (60/71) [p = 0.04]¶

42 (35/49)¶[p = 0.47]

14 (10.5/21) [p = 0.85]

29 (22/33) [p = 0.04]

12.5 (7.5/17) [p = 0.04]

13.5 (9/18) [p = 0.07]

Postoperative

69 (63.5/80)

40.5 (36/45.75)

20 (7/23)

36 (30/42)

10 (0/11.5)

18 (16/25)

Xenograft

Contralateral

78 (77.25/79.5) [p = 0.11]

35 (29/35)¶[p = 0.1]

21 (18.5/23.5) [p = 0.14]

46.5 (42.75/51) [p = 0.07]

1.5 (0/3.75) [p = 0.1]

24 (24/28.5) [p = 0.11]

Preoperative

71.5 (69.5/75) [p = 0.03]

48 (39.75/50.5) [p = 0.04]

13 (11.5/19.75) [p = 0.6]

32 (22/42.5) [p = 0.1]

5.5 (0/13.25) [p = 0.89]

17.5 (9.75/24.75) [p = 0.79]

Postoperative

76.5 (72.75/80.75)

42 (39/45.25)

15 (10/22)

38 (30.5/44.5)

8.5 (3/10)

18 (16.25/21)

Both

Contralateral

73.5 (66/78) [p = 0.04]

33 (29.5/35) [p = 0.07]

20.5 (14.25/22.75) [p = 0.04]

43.5 (40.5/51) [p = 0.02]

1.5 (−3/8.5) [p = 0.04]

24 (19.5/28.75) [p = 0.11]

Preoperative

69 (63/72.75) [p = 0.003]

45 (37/50) [p = 0.07]

13 (11.25/19.5) [p = 0.54]

29 (22.5/36) [p = 0.01]

10.5 (0.5/15.25) [p = 0.12]

16 (10/18) [p = 0.06]

Postoperative

76 (69/79)

42 (37/50)

18 (10/22)

36 (30/44)

10 (4/10)

18 (17/22)

  1. *TC height: talocalcaneal height; CF angle: calcaneal-to-floor angle; TC angle: talocalcaneal angle; TFM angle: talus-first metatarsal angle. Height and width in millimeters. ††Angle in degrees. ¶ Median (25th percentile/75th percentile) [p value in relation to the postoperative period]: Wilcoxon nonparametric test.