. Author manuscript; available in PMC: 2013 Jul 15.

Published in final edited form as: Am J Vet Res. 2011 Mar;72(3):376–383. doi: 10.2460/ajvr.72.3.376

Table 5.

Mean ± SD hip joint volume ratios and DIs in 1 hip joint from each of 46 mixed-breed hound-type dogs with hip joint osteoarthritis at 16 and 32 weeks of age corresponding to each radiographic OA score as measured at 32 and 104 weeks of age.

Variable	0	1	2	3
Volume ratios at 16 wk by OA score at 32 wk
FV/AV	0.85 ± 0.12	0.86 ± 0.11	0.87 ± 0.09	0.84 ± 0.16
FVIA/FV	0.38 ± 0.11^a	0.32 ± 0.08^a,b	0.27 ± 0.19^a,b	0.20 ± 0.10^b
FVIA/AV	0.32 ± 0.09^a	0.27 ± 0.06^a,b	0.24 ± 0.19^a,b	0.17 ± 0.08^b
DI	0.59 ± 0.12^a	0.65 ± 0.07^a,b	0.85 ± 0.15^b	0.83 ± 0.17^b
Volume ratios at 16 wk by OA score at 104 wk
FV/AV	0.86 ± 0.11	0.81 ± 0.13	0.87 ± 0.12	0.86 ± 0.14
FVIA/FV	0.38 ± 0.11^a	0.42 ± 0.10^a	0.26 ± 0.06^a,b	0.22 ± 0.11^b
FVIA/AV	0.32 ± 0.09^a	0.33 ± 0.07^a	0.23 ± 0.05^a,b	0.19 ± 0.10^b
DI	0.57 ± 0.11^a	0.65 ± 0.07^a	0.71 ± 0.08^a,b	0.82 ± 0.15^b
Volume ratios at 32 wk by OA score at 104 wk
FV/AV	1.07 ± 0.18	1.01 ± 0.22	1.07 ± 0.11	0.98 ± 0.20
FVIA/FV	0.35 ± 0.13^a	0.27 ± 0.11^a	0.19 ± 0.04^a,b	0.06 ± 0.08^b
FVIA/AV	0.37 ± 0.14^a	0.26 ± 0.09^a	0.20 ± 0.03^a,b	0.07 ± 0.09^b
DI	0.64 ± 0.16^a	0.81 ± 0.14^b	0.81 ± 0.07^a,b	0.96 ± 0.07^b

See Tables 1 and 2 for key.