Average percentage (%) of empty lacunae by position in femoral head (SD) | ||||||
---|---|---|---|---|---|---|
 | Subchondral bone | |||||
1 | 2 | 3 | 4 | Total | P value | |
 CD | 41.4 (28.7) | 51.2 (22.6) | 65.8 (16.7) | 35.6 (19.2) | 48.5 (23.8) |  < 0.001 |
 HG | 46.6 (22.6) | 65.8 (19.9) | 50.9 (20.9) | 28.8 (20.3) | 48.0 (23.7) |  < 0.001 |
 MSC | 58.9 (31.7) | 71.6 (16.7) | 40.7 (34.2) | 8.8 (3.1) | 45.0 (33.4) |  < 0.001 |
 PGK-PDGF-BB-MSC | 16.1 (15.7) | 12.0 (9.9) | 19.1 (12.5) | 23.0 (22.2) | 17.5 (15.3) | 1.0 |
 | Surrounding tunnel | ||||
---|---|---|---|---|---|
5 | 6 | 7 | Total | P value | |
 CD | 59.8 (23.1) | 52.8 (22.1) | 46.2 (11.5) | 52.9 (19.3) |  < 0.0001 |
 HG | 64.2 (22.8) | 44.9 (24.9) | 27.1 (13.2) | 45.4 (25.1) |  < 0.001 |
 MSC | 72.6 (13.4) | 55.7 (21.9) | 50.4 (25.7) | 59.6 (21.9) |  < 0.0001 |
 PGK-PDGF-BB-MSC | 30.3 (20.7) | 24.4 (17.6) | 14.0 (7.8) | 22.9 (16.8) | 1.0 |