Table 8 

Severity of Z joint osteophyte formation per animal *


Weeks released Controls (SD) 1 week (SD) 4 week (SD) 8 week (SD)

0 N/A 0.8 (0.4) 1.6 (0.3) 1.5 (N/A)

1 0.2 (0.2) 0.6 (0.1) 1.0 (0.8) 1.7 (0.8)

2 0.5 (0.6) 0.7 (0.6) 0.7 (0.7) 2.1 (0.6)

4 0.4 (0.3) 0.8 (0.5) 0.4 (0.1) 1.8 (0.4)

8 1.0 (0.4) 1.2 (0.7) 1.2 (0.9) 2.2 (1.0)

12 0.7 (0.9) 0.5 (0.4) 1.3 (0.9) 2.3 (0.5)

16 0.9 (1.0) N/A N/A N/A

Average 0.6 (0.7) 0.8 (0.5) 1.0 (0.7) 2.0 (0.6)