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Figure 6 | Arthritis Research & Therapy

Figure 6

From: Rationale for prostaglandin I2in bone marrow oedema – from theory to application

Figure 6

The graph shows the different osteonecrosis stages according to Association Research Circulation Osseous (ARCO) classification during follow-up. (a) ARCO stages three months after iloprost application. The distribution was as follows: 56 ARCO 0, 31 ARCO I, 15 ARCO II, 13 ARCO III and two ARCO IV. (b) ARCO stages six months after iloprost application. The distribution was as follows: 65 ARCO 0, 23 ARCO I, 14 ARCO II, 13 ARCO III and two ARCO IV.

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