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Median circulating levels of five types of BMPs (pg/ml and range) between patients with demonstrated normal (within nine months) or delayed fracture healing
| Type of BMP | Normal union (n = 34) | Delayed union (n = 31) | p-value |
|---|---|---|---|
| BMP-2 | 657 (542–2109) | 641 (467–2036) | 0.641 |
| BMP-4 | 640 (372–2410) | 674 (395–1584) | 0.618 |
| BMP-6 | 699 (135–2103) | 554 (135–1379) | 0.323 |
| BMP-7 | 236 (146–2196) | 299 (90–2127) | 0.836 |
| BMP-9 | 312 (72–2496) | 288 (120–816) | 0.231 |
