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Table 4 Table showing the stage-wise proportion of cases underwent radiological progression, collapse, and surgery

From: Bisphosphonate combination therapy for non-femoral avascular necrosis

Stage at the commencement of treatment

Number of affected joints at presentation

Number of joints had radiological progression

Number of joints had radiological collapse

Number of joints underwent surgery

I

7

4/7 (57.1%)

1/7 (14.3%)

0/7

II

11

5/11 (44.5%)

5/11 (44.5%)

1/11 (9.1%)

Total

18

9/18 (50%)

6/18 (33.3%)

1/18 (5.6%)