Table 2 Ultrasound outcomes, shown individually for each radiologist (Rad), and UTC outcomes, reported as mean ± standard deviation, unless noted otherwise.

From: Autologous bone marrow derived mesenchymal stem cells are safe for the treatment of Achilles tendinopathy

Outcome

Rad

Baseline

6 weeks

12 weeks

24 weeks

P-value (baseline to 24 weeks)

N

 

Change mean (95% CI)

N

 

Change mean (95% CI)

N

 

Change mean (95% CI)

Max AP Thickness, mm

1

8.2 ± 1.5

5

8.5 ± 1.3

0.4 (− 0.1, 0.8)

4

8.0 ± 1.6

0.0 (− 0.1, 0.1)

2

 

2

9.2 ± 1.6

8

9.2 ± 1.7

0.0 (− 0.3, 0.4)

7

8.6 ± 2.1

 − 0.1 (− 0.5, 0.3)

5

7.8 ± 1.3

 − 0.8 (− 1.3, − 0.2)

0.02

Lesion distance, mm

1

39 ± 8

5

40 ± 7

2 (− 2, 5)

4

36 ± 7

 − 2 (− 6, 3)

2

 

2

40 ± 17

8

45 ± 9

5 (− 8, 18)

7

40 ± 10

0 (− 4, 4)

5

43 ± 6

10 (− 15, 34)

0.34

Focal change,* mm

1

0.0 [0.0, 3.6]

5

0.3 [0.0, 3.6]

0.0 [− 3.3, 3.0]

4

1.5 [0.0, 3.7]

0.1 [0.0, 3.0]

2

 

2

0.0 [0.0, 5.3]

8

0.3 [0.0, 3.0]

0.0 [− 3.2, 0.7]

7

0.3 [0.0, 2.3]

0.0 [− 4.6, 0.7]

5

0.3[0.0, 3.0]

0.0 [0.0, 0.0]

1.00

% thickness*

1

0 [0.42]

5

3 [0, 39]

0 [− 39, 38]

4

21 [0, 44]

1 [0, 42]

2

 

2

0 [0, 54]

8

0 [0, 35]

0 [− 29, 7]

7

0 [0, 38]

0 [− 45, 10]

5

0 [0, 0]

0 [0, 0]

1.00

UTC fibre type^ (% disorganized)

32 ± 16

7

29 ± 9

 − 3 (− 17, 11)

7

26 ± 7

 − 2 (− 17, 14)

6

27 ± 14

 − 3 (− 25, 19)

0.73

  1. Rad radiologist, Max AP Thickness maximum anteroposterior thickness, UTC Ultrasound tissue characterization.
  2. *Reported as median [inter-quartile range] at each time point, along with median change [95% CI].
  3. ^Disorganized = Type 3 (i.e. haphazard fibres aligned) + Type 4 (i.e. amorphic material or no fibres.