Clean Run - June 2018 - 34
Tick-Borne
Diseases in
Agility Dogs
© Flickr ElizabEth NicodEmus
By Matt Brunke, DVM and Nicole Chun, DVM
Flash, a 2-year-old male neutered Border Collie, was presented to Veterinary Orthopedic and Sports Medicine
Group (VOSM) for an approximately
two-month history of left hindlimb
lameness. Flash's owner first noticed
the lameness when he slowed going
up contact ramps and started hesitating when jumping. At home, he would
occasionally favor the left hindlimb, but
this would resolve after a day or two.
At this time, we were suspicious of either an early partial cranial cruciate ligament
(CCL) tear or a tick-borne disease. The owner elected to start with tick titers and a
joint tap. The titers came back at 1:100 for Rocky Mountain Spotted Fever, and the
cytology had a mixed population of non-degenerative neutrophils and mononuclear
cells. This was not definitive either way, and we were not sure if the effusion was due
to tick-borne disease or an early partial cranial cruciate ligament tear.
1
Flash saw his primary care veterinarian
after a month of this persistent issue. No
specific cause was identified and Rimadyl (a non-steroidal anti-inflammatory)
was prescribed. The medication helped
for a week, but then the lameness returned so he was referred to our hospital for a sports medicine evaluation.
On examination at VOSM, spasm and
discomfort was noted on left stifle hyperextension, and moderate effusion
was noted in the left stifle. There was
mild left thigh atrophy (1cm difference
vs. the right). No cranial drawer or cranial tibial thrust was found, and he was
negative for the McMurray test (looking for meniscal disease). The rest of the
physical exam was within normal limits.
Based on these findings, radiographs
were taken of both stifles, as well as the
hip joints. The right stifle was normal and
the hips were normal, but there was evidence of left stifle effusion, without degenerative joint change. See Figure 1.
34
Radiograph Left Stifle:
Joint Effusion evident
Courtesy of VOSM.
Radiograph Right Stifle:
No joint effusion
Courtesy of VOSM.
Clean Run | June 18
Table of Contents for the Digital Edition of Clean Run - June 2018
Contents
Clean Run - June 2018 - Cover1
Clean Run - June 2018 - Cover2
Clean Run - June 2018 - Contents
Clean Run - June 2018 - 4
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Clean Run - June 2018 - Cover3
Clean Run - June 2018 - Cover4
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