Table 1.

A summary of history, microdamage, and macroscopic appearance in the mid-condylar region and parasagittal groove of the lateral (L) and medial (M) condyles for each horse. Younger and older animals are separated by a dotted line

Horse	Age	Race starts	Microdamage				Macroscopic appearance
			Mid-condylar region		Parasagittal groove		POD		Linear fissures
			L	M	L	M	L	M	L	M
1	3	2	None	None	Moderate	Mild	0	0	1	1
2	3	7	None	None	Moderate	Mild	0	0	2	2
3	4	3	None	None	None	Mild	0	0	0	0
4	4	5	None	Moderate	Mild	Mild	0	2	1	1
5	4	6	None	Moderate	Mild	Moderate	0	0	1	1
6	4	6	None	None	Mild	Moderate	0	0	1	1
7	4	9	Mild	Moderate	Mild	Mild	1	1	0	1
8	5	8	None	None	Mild	Mild	0	1	0	1
9	5	8	None	None	Moderate	Mild	0	0	1	2
10	5	12	None	None	Mild	Mild	0	0	0	0
11	6	21	Moderate	Moderate	Moderate	Moderate	1	1	1	1
12	6	27	Moderate	Moderate	Mild	Mild	1	1	0	0
13	7	27	Moderate	Severe	Severe	Severe	2	3	1	2
14	7	50	Severe	Severe	Moderate	Moderate	2	2	1	1
15	8	56	Severe	Severe	Severe	Moderate	2	2	1	1
16	8	57	Mild	Mild	Mild	Mild	1	1	1	0