Table 5 Clinical studies evaluating outcome and complications of hook plate fixation for mallet fracture

Teoh and Lee (2007) [6]

9

Fractures > 1/3 articular surface w/ subluxation distal phalanx

17 (6–37) months

64^o (range 60^o–70^o)

0^o

E44, G56%

Warren and Norris 100% success

3 nail deformity

0

Kanthan Theivendran et al. (2007) [5]

1

DIP jpint avulsion fracture w/ volar subluxation

6 months

70^o

8^o

G:100%

DASH: 0 point

0

0

Szalay et al. (2011) [7]

59

Doyle IVb with displacement > 2 mm

38.3 (3–69) months

77^o

7^o

^b

very good in 85%, good in 9%, and bad in 7%

7 nail deformity; 2 skin perforations

14

Serdar Toker

Et al (2015) [8]

6

>  25% articular

Surface

12.7 (3–26)months

80^o

5^o

E:33% G:33% F:33%

VAS 7.5 ^b > 2.0

1 partial skin necrosis and delayed wound healing

0

M. A. Acar1

Et al (2015) [9]

13

>  1/3 articular surface

>  12 months.

64^o

3^o

E:61.5% G:38.5%

VAS 0

3 nail deformity

0

Fábio Sano Imoto (2016) [16]

25

>  1/3 articular surface or volar subluxation

18 months

4 pt’(16%): limited flexion

7 pt’ (28%): limited extension

E:40% G:60%

84%: no pain

16%: symptoms mild intensity.

0

0

Joyce Tie (2017)

[10]

31

DIPJ subluxation

>  30% fragment

8 ± 6 months

56^o(range 30^o–80^o)

Pre-op

22^o(range 0^o–50^o)

Post-op

6^o(range 0^o–45^o)

E: 29%

G: 26%

F: 39%

P: 6%

^b

3 nail deformity; 3 fracture displacement;

3 skin flap ischaemia

22 (71%)

Andal Thirumalai (2017) [11]

35

>  1/3 articular surface

24 months

40^o

5 ^o (F/U in 10 cases)

^b

^b

6 Nail deformity

5 Plate extrusion

14 (40%)

H. Vester (2018) [17]

38

>  1/2 articular surface with joint subluxation

>  12 months

^b

^b

^b

SF-36: 50 points^c

^b

14 (37%)