Figure 1. Schematic to show the structural differences between brachydont and hypsodont teeth. a) Brachydont tooth (molar) has a low crown covered with enamel, and cementum is only present below the gumline. b) Hypsodont tooth (incisor) has a long reserve crown and continually erupt with the appearance of the occlusal surface changing as the animal ages.

Equine odontoclastic tooth resorption and hypercementosis

A number of theories exist underpinning the aetiology of equine odontoclastic tooth resorption and hypercementosis. Mechanical strain on the periodontal ligament may be involved (Staszyk et al, 2008;...

Figure 10. a) In the standard 55° navicular skyline image, sclerosis of the spongiosa is identified. The flexor cortex has decreased bone density, but a distinct defect is not visible. b) In a shallow angle (approximately 40°) navicular skyline image of the same horse, a focal irregular lucent defect is highlighted in the flexor cortex (white arrow). c) A mildly oblique upright lateromedial image catches the focal flexor cortex erosion in the distal aspect of the flexor cortex (white arrow).

A review of radiographic interpretation of the navicular bone

The navicular bone, or distal sesamoid bone, is located on the palmar aspect of the distal interphalangeal joint suspended by the collateral sesamoidean ligament, which attaches to the distal abaxial...

Figure 1. Laterolateral radiographs of the normal cervical spine. A; cranial, B; mid, C; caudal neck.

Imaging the equine neck

Common modalities for imaging of the neck include:.

Figure 1. a. Lateromedial, (b) upright pedal and (c) navicular skyline radiographs of a 14-year-old Quarter Horse gelding with a normal navicular bone. Note the artifactual two linear lucent lines superimposed with proximal P2 as a result of the central sulcus of the frog in b.

CPD article: Radiographic interpretation of the navicular bone: a review

The navicular bone, or distal sesamoid bone, is located on the palmar aspect of the distal interphalangeal joint suspended by the collateral sesamoidean ligament, which attaches to the distal abaxial...