. Author manuscript; available in PMC: 2013 Nov 28.

Published in final edited form as: Vet Surg. 2012 Jan;41(1):10.1111/j.1532-950X.2011.00938.x. doi: 10.1111/j.1532-950X.2011.00938.x

Table 5.

Proportions of Osteoarthritis (OA), Subluxation, Caudolateral Curvilinear Osteophytes (CCO), Circumferential Femoral Head Osteophytes (CFHO), and Orthopedic Foundation for Animals (OFA) Grades by DI Intervals

DI Interval	N	Mean Age	Mean Weight^*	OA	CCO	CFHO	Sblx	CHD
0.33–0.49	53	3.1	12.0	2 (3.8)	10 (18.9)	41 (77.4)	0(−)	2 (3.8)
0.50–0.59	127	2.2	11.3	4 (3.1)	26 (20.5)	96 (75.6)	12 (9.4)	13 (10.2)
0.60–0.69	108	2.4	11.4	10 (9.3)	32 (29.6)	81(75.0)	25 (23.1)	28 (25.9)
≥ 0.70	111	2.0	11.1	11 (9.9)	21 (18.9)	79 (71.2)	35 (31.5)	37 (31.5)

Over all weights based on n = 368. The proportions of OA, CCO, and CFHO are based on appearance in either right or left hip joint or both [n(%)].

CHD: canine hip dysplasia. Mean DI calculated using highest DI per dog.