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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.