Читать книгу Equine Lameness for the Layman. Tools for Prompt Recognition, Accurate Assessment, and Proactive Management онлайн

34 страница из 44

VL 7b

 In some cases of chronic (long-term) navicular inflammation, horses will develop associated inflammation of the coffin joint, a portion of which resides just in front of (or dorsal to) the navicular bone (fig. 7.2). In this instance, many professionals implicate the close proximity of the two structures as the reason for the associated lameness: inflammation in the navicular region may “diffuse” into the nearby coffin joint.

7.2 Relative Locations of the Navicular Bone and Coffin Joint

Inflammation originating in the navicular region can indirectly “diffuse” into the coffin joint (highlighted in pink) and vice versa.

Sources of associated and compensatory lameness are genuine in that they precipitate their own gait deficits. Both may persist even after the primary source(s) of lameness are successfully treated.

Referred lameness, on the other hand, is not authentic; it is merely a visible extension of a problem existing somewhere else in the horse. This form of secondary lameness can be expressed in a variety of ways, depending on the location and nature of the primary issue. Areas of the body displaying referred asymmetry do not require direct diagnostic or therapeutic attention since corresponding gait deficits will disappear upon resolution of the primary inciter. Expected manifestations of referred lameness are discussed in ssss1 (ssss1).