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Table 3 Comparison of the cross-sectional area of the PL tibial tunnel at the four cutting levels between immediate postoperative and postoperative 1 year CT scans

From: Paradoxical tunnel enlargement after ACL reconstruction with hamstring autografts when using β-TCP containing interference screws for tibial aperture fixation- prospectively comparative study

Cutting level

 

Cross-sectional area (mm2)

 
 

Group

Immediate postop.

1YR

Difference

† P

Joint line

1

21.1 ± 6.3

28.8 ± 10.5

7.7 (36.3%)

0.002

 

2

24.5 ± 4.1

34.6 ± 7.5

10.1 (41.5%)

< 0.001

* P

   

0.411

 

Mid-tunnel

1

23.0 ± 6.6

30.7 ± 11.8

7.7 (33.5%)

< 0.001

 

2

25.0 ± 3.8

36.0 ± 10.0

11.0 (44.2%)

< 0.001

* P

   

0.179

 

Mid-screw

1

36.6 ± 8.58

42.4 ± 12.8

5.8 (15.8%)

< 0.001

 

2

40.0 ± 6.83

46.7 ± 13.3

6.7 (16.8%)

0.003

* P

   

0.734

 

Outlet

1

33.3 ± 9.4

34.1 ± 11.0

0.8 (2.5%)

0.445

 

2

36.1 ± 8.0

36.6 ± 10.0

0.5 (1.4%)

0.647

* P

   

0.845

 
  1. 1YR; postoperative 1 year
  2. *Comparison of the increments in cross-sectional area 1 year after surgery between two groups at each cutting level
  3. †Comparison of the cross-sectional area between immediate postoperative and postoperative 1 year CT scans
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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