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Thursday, December 27, 2012
The image below is of a horse's foot that is suffering from a conformational problem known as "long toe-under run heels". This horse tends to grow significant amount of hoof wall within 4-5 weeks without growing normal heel. Although the heel regions grow, they tend to roll under the center of the hoof. As such, this horse and others like him are prone to heel pain and poor performance. In Figure 1 the center of rotation is marked by the blue line. Ideally, the length of foot that is in front of the blue line and behind should be equal. This would result in a horse that is balanced "cranial to caudal" with respect to the center of rotation.
Thursday, December 13, 2012
Recheck endoscopy after 45 days revealed a significant improvement (Figure 2) ; however, treatment was discontinued prematurely and a final endoscopy was not performed.
Over 1 year after the initial presentation, the abnormal noise returned along with bloody nasal discharge. The pale yellow nodules have increased in size and number. Multiple small yellow granuoles are noted through out the pharynx and there is evidence of mild bleeding. The horse will again be treated with systemic anti-fungal medication. A follow up exam to follow!!
Thursday, December 6, 2012
The image above is an endoscopic pic of a middle-aged gelding that presented for a history of exercise intolerance. Apparently, during low level, forced exercise, the gelding would begin to make loud "gurgling" noises and become short of breath! In addition, the gelding would cough on a regular basis, especially when eating in the stall.
The image above is that from a normal horse. The yellow arrow is pointing to the epiglottis which is not visible in Figure 1 and Figure 3 due to the dorsal displacement of the soft palate. Normally, horses breathe through their nasal passages. The epiglottis helps keep the soft palate in position thus keeping the oral pharynx separate from the nasal pharynx. However, when the soft palate becomes displaced and covers the epiglottis, the nasal pharynx and oral pharynx communicate directly. When this occurs, the horse suddenly begins to breath through its oral cavity which results in a gurgling sound and exercise intolerance.