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Table 2 Change in International Cartilage Research Society grade

From: Comparison of the regeneration of cartilage and the clinical outcomes after the open wedge high tibial osteotomy with or without microfracture: a retrospective case control study

ICRS grade on second look arthroscopy

Microfracture (n = 57)

No microfracture (n = 30)

p-value

Preoperative

Postoperative

Preoperative

Postoperative

 

MFC (Grade 0/1/2/3/4)

0/3/13/21/20

3/8/9/15/8/14

0/2/7/15/6

0/7/15/6/2/0

 

 Improvement/stationary/worsening

43 (75.4%) / 13 (22.8%) / 1 (1.8%)

16 (53.3%) / 10 (33.3%) / 4 (13.3%)

0.014*

MTP (Grade 0/1/2/3/4)

0/0/18/6/33

1/11/22/13/9/1

0/5/12/10/3

1/11/10/5/3/0

 

 Improvement/stationary/worsening

35 (61.4%) / 15 (26.3%) / 7 (12.3%)

15 (50.0%) / 13 (43.3%) / 2 (6.7%)

0.742*

LFC (Grade 0/1/2/3/4)

21/32/4/0/0

7/38/12/0/0

17/10/3/0/0

9/18/3/0/0

 

 Improvement/stationary/worsening

3 (5.3%) / 32 (56.1%) / 22 (38.6%)

0 (0.0%) / 22 (73.3%) / 8 (26.7%)

0.674*

LTP (Grade 0/1/2/3/4)

8/42/7/0/0

1/36/18/2/0

8/21/1/0/0

6/13/11/0/0

 

 Improvement/stationary/worsening

3 (5.3%) / 33 (57.9%) / 21 (36.8%)

2 (6.7%) / 16 (53.3%) / 12 (40.0%)

0.936*

Patella (Grade 0/1/2/3/4)

15/29/9/2/2

1/29/22/4/1

9/16/4/1/0

4/14/11/1/0

 

 Improvement/stationary/worsening

4 (7.0%) / 26 (45.6%) / 27 (47.4%)

3 (10.0%) / 15 (50.0%) / 12 (40.0%)

0.480*

Trochlea (Grade 0/1/2/3/4)

7/26/18/5/1

2/15/29/9/2

9/12/6/3/0

2/7/16/5/0

 

 Improvement/stationary/worsening

4 (7.0%) / 27 (47.4%) / 26 (45.6%)

4 (13.3%) / 7 (23.3%) / 19 (63.3%)

0.496*

  1. The values are presented as number with the percent in parentheses. *Derived using the linear by linear association. The statistical significance was set at p < 0.05 derived using the linear by linear association. MFC medial femoral condyle, MTP medial tibial plateau, LFC lateral femoral condyle, LTP lateral tibial plateau