Table 2.
Matched Pairs (n = 207) |
Third tubular platem (n = 138) |
Locking platem (n = 69) |
p-value | ||
---|---|---|---|---|---|
Age [years], mean ± std | 70.47 ± 12.08 | 70.01 ± 11.84 | 71.41 ± 12.59 | 0.434a | |
Sex, n (%) |
m f |
51 (24.6) 156 (75.4) |
34 (24.6) 104 (75.4) |
17 (24.6) 52 (75.4) |
1b |
BMI [kg/m²], median (max; min) |
27.10 (55.9; 18.0) | 27.20 (55.9; 19.2) | 27.04 (43.3; 18.0) | 0.879c | |
AO/OTA, n (%) |
44 A 44B 44 C |
8 (3.9) 164 (79.2) 35 (16.9) |
6 (4.3) 108 (78.3) 24 (17.4) |
2 (2.9) 56 (81.2) 11 (15.9) |
0.837b |
Type of ankle fracture, n (%) |
unimalleolar bimalleolar trimalleolar |
87 (42,0) 44 (21,3) 76 (36,7) |
67 (48,6) 26 (18,8) 45 (32,6) |
20 (29,0) 18 (26,1) 31 (44,9) |
0.027 b |
Open fracture, n (%) | 9 (4.3) | 4 (2.9) | 5 (7.2) | 0.164b | |
ASA-Score, mean ± std |
1 2 3 4 |
14 (7.6) 99 (53.8) 69 (37.5) 2 (1.1) |
12 (9.7) 66 (53.2) 44 (35.5) 2 (1.6) |
2 (3.3) 33 (55.0) 25 (41.7) 0 (0) |
0.315b |
External fixator, n (%) | 34 (16.4) | 18 (13.0) | 16 (23.2) | 0.063b | |
Comorbidity, n (%) |
Diabetes mellitus Peripheral Artery Disease Smoking Arterial hypertension Osteoporosis Alcohol abuse |
53 (25.6) 8 (3.9) 33 (15.9) 147 (71.0) 52 (25.1) 14 (6.8) |
27 (19.6) 6 (4.3) 21 (15.2) 95 (68.8) 30 (21.7) 8 (5.8) |
26 (37.7) 2 (2.9) 12 (17.4) 52 (75.4) 22 (31.9) 6 (8.7) |
0.005 b 0.721b 0.687b 0.330b 0.113b 0.558b |
Time to definitive surgery [days], median (max; min) |
5 (26; 0) | 5 (17; 0) | 4 (26; 0) | 0.004 c | |
Day of the week, n (%) |
Mo Tu We Th Fr Sa Su |
49 (23.7) 30 (14.5) 44 (21.3) 20 (9.7) 48 (23.2) 9 (4.3) 7 (3.4) |
32 (23.2) 17 (12.3) 36 (26.1) 10 (7.2) 32 (23.2) 5 (3.6) 6 (4.3) |
17 (24.6) 13 (18.8) 8 (11.6) 10 (14.5) 16 (23.2) 4 (5.8) 1 (1.4) |
0.121b |
Time of surgery, n (%) |
8 am − 4 pm 4 pm − 0 pm 0 am − 8 am |
131 (63.3) 73 (35.3) 3 (2.2) |
93 (67.4) 42 (30.4) 2 (1.4) |
38 (55.1) 31 (44.9) 0 (0.0) |
0.069c |
Duration of surgery [min], median (max; min) |
78.00 (218; 25) | 70 (218; 25) | 95 (196; 37) | < 0.001 a | |
Drain, n (%) | 147 (71.0) | 94 (68.1) | 53 (76.8) | 0.194b | |
Syndesmotic screw, n (%) |
96 (46.4) | 57 (41.3) | 39 (56.5) | 0.038 b | |
Revision surgery, n (%) | 30 (14.5) | 15 (10.9) | 15 (21.7) | 0.036 b | |
Time of revision surgery |
Early (< 4 postoperative weeks) Late (> 4 postoperative weeks) |
6 (20.0) 24 (80.0) |
2 (13.3) 13 (86.7) |
4 (26.7) 11 (73.3) |
0.651b |
a Student’s t-test
b Chi-squared test
c Mann–Whitney U test