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. 2024 Dec 3;18:33. doi: 10.1186/s13037-024-00419-7

Table 2.

Matched pairs 2:1

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