Table 2.
Nonunion rate by type of fracture, amount of displacement and shortening.
| Variable | Healed Fracture (81/122) | Delayed Union (24/122) | Nonunion (17/122) |
p-Value (Kruskal–Wallis) |
|---|---|---|---|---|
| Age, mean (SD) Median (range) |
37.4 (11.7) 38 (61–18) |
36.2 (14.5) 36.5 (62–18) |
39.5 (14.5) 38 (60–18) |
0.720 |
| Type of fracture, % (number/total n =122) A1 A2 A3 B1 B2 B3 |
66.7 (6/9) 67.7 (21/31) 25 (3/12) 60 (6/10) 86.7 (20/23) 67.6 (25/37) |
11.1 (1/9) 19.4 (6/31) 33.3 (4/12) 30 (3/10) 8.7 (2/23) 21.6 (8/37) |
22.2 (2/9) 12.9 (4/31) 41.7 (5/12) 10 (1/10) 4.3 (1/23) 10.8 (4/37) |
0.494 |
| Type of fracture (FT), % (number/total n =122) A B |
57.7 (30/52) 72.8 (51/70) |
21.15 (11/52) 18.6 (13/70) |
21.15 (11/52) 8.6 (6/70) |
χ2
0.10 |
| Initial shortening % (IS), median (range) |
0 (12–0) | 3.85 (11–0) | 2 (10–0) | 0.15 |
| Residual shortening % (RS), median (range) |
0 (12–0) | 0 (8–0) | 0 (6–0) | 0.014 * 0.0059 § 1 # 0.06571 |
| Initial displacement % (ID), median (range) |
102 (170–16) | 130 (230–80) | 150 (177–34) | <0.0001 * 0.0008 § 0.0004 # 0.890 |
| Residual displacement % (RD), median (range) | 90 (145–10) | 122.5 (185–80) | 150 (180–46) | <0.0001 * <0.0000 § <0.0000 # 0.2425 |
* = healed fractures vs. delayed, § = healed fractures vs. nonunion, # = delayed vs. nonunion.