Table 2 Surgical history

History

n = 302

n = 527

n = 1487

 Previous surgery, n (%)

30 (10%)

113 (21%)

250 (17%)

 < 0.001^a

 Willing to have surgery

n = 217

n = 274

n = 704

0.013^a

  Total

36 (17%)

88 (32%)

279 (38%)

0.013 ^a

  Male

9 (25%)

47 (53%)

114 (42%)

  Female

27 (75%)

41 (47%)

156 (58%)

Procedure

n = 20

n = 76

n = 164

 Total knee replacement, n (%)

17 (85%)

35 (46%)

76 (48%)

0.005^a

 Arthroscopic washout/debridement, n (%)

0 (0%)

29 (38%)

45 (28%)

0.004^a

 Synovectomy procedure, n (%)

1 (5%)

2 (3%)

8 (5%)

0.612^b

 Osteotomy, n (%)

0 (0%)

2 (3%)

8 (5%)

0.584^b

 Joint revision, n (%)

1 (5%)

0 (0%)

7 (4%)

0.102^b

 Conversion to joint replacement, n (%)

0 (0%)

2 (3%)

4 (3%)

1.000^b

 Arthrodesis, n (%)

0 (0%)

2 (3%)

3 (2%)

0.776^b