Fig. 8. These composite images depict three different grades of sacral margin proliferation. The images are made in a paramedian plane. S indicates sacrum; I, ilium; joint space is demarcated by the open arrow. Arrowheads identify bone proliferation that is mild in A, moderate in B, and severe in C on the sacrum at the level of the sacroiliac joint.
was 8, with a range of 3 to 22 years. In 227 horses, poor performance was attributed at least in part to abnormalities of the lumbosacral or sacroiliac joints. Four horses were asymptomatic, and transrectal ul- trasound was performed as a part of pre-purchase examination.
Images of 228 lumbosacral disc spaces were re- viewed. There was sacralization of the LS space in three horses (1%). Three horses were excluded because diagnostic images were not saved to the PACS. Because of data presented previously by Nagy and Dyson, normal and mild were considered
Fig. 9. These composite images depict three different grades of ilium margin proliferation. The images are made in a paramedian plane. S indicates sacrum; I, ilium; joint space is demarcated by the open arrow. Arrowheads identify bone proliferation that is mild in A, moderate in B, and severe in C on the ilium at the level of the sacroiliac joint.
