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Table 4 Parameters of interest for comparison of the 3D and 2D groups

From: Intraoperative 3D imaging in intraarticular tibial plateau fractures - Does it help to improve the patients’ outcomes?

Parameter

3D group

2D group

p-Value

Age

51.0± 16.4

50.3± 15.2

0.82

Gender

12f : 6m

11f : 7m

0.79

Fracture AO/OTA

9x B3,

2x C1, 1x C2, 6x C3

9x B3,

2x C1, 1x C2, 6x C3

1.00

ASA

1.44± 0.51

1.67± 0.49

0.27

Operation time (min)

127.9± 45.9

116.3± 45.7

0.28

Follow - up (months)

20.9± 10.7

55.5± 34.7

P < 0.001

Lysholm

67.4± 26.8

62.0± 21.4

0.39

KOOS overall

72.6± 23.5

65.8± 21.6

0.31

Symptoms

69.8± 26.6

69.8± 25.8

0.94

Pain

77.2± 22.6

71.8± 23.0

0.44

ADL

81.1± 19.5

78.4± 23.7

0.70

Sport/Rec

54.7± 35.0

26.7± 31.6

0.014*

QOL

58.0± 31.6

38.2± 26.1

0.059

Intraoperative revision rate

33.3% re-positioning of the screws and/or re-reduction

Not registered

-

Postoperative revision rate

27.8% revision (n=5):

- wound revision

- SSI, spacer, unicondylar TEP

- varus osteotomy due to valgus alignment

- renewed reposition

- early material removal

27.8% revision (n=5):

- 1x screw intraarticular, material removal

- 2x loss of reposition/ renewed reposition

- bicondylar KTEP

- SSI/ unicondylar KTEP

1.00

Postoperative revisions due to intraarticular material position or joint step of ≥ 2mm

11.1% (n=2):

- varus osteotomy due to valgus malalignment

- 1x loss of reposition/ renewed reposition

22.2% (n=4):

- 1x screw intraarticular, material removal

- 2x loss of reposition/ renewed reposition

- 1x loss of reposition/ bicondylar KTEP

0.58

Material removal (months)

1x arthrolysis and material removal after 19 months

10x arthrolysis and material removal after 16.9± 2.6 months

-

Special details without revision

-

2xPostoperative recognized joint step > 2mm

1xpostoperative recognized intraarticular screw

1xpostoperative recognized too long screw

-

  1. SSI surgical site infection; Symptoms KOOS Symptoms; Pain KOOS Pain; ADL KOOS Function in daily living; Sport/Rec KOOS Function in sport and recreation; QOL KOOS Quality of Life; ASA American Society of Anesthesiologists- Score
  2. * significant