Clean Run - November 2016 - 49


Flexor Carpi Ulnaris

Tendinopathy

in the Agility Dog

© GreAtDAnephotos

By Brittany Jean Carr, DVM, CCRT Resident, American College of Veterinary Sports Medicine and Rehabilitation and
Sherman O. Canapp, Jr., DVM, MS, CCRT Diplomat, American College of Veterinary Surgeons-Small Animal, Diplomat American
College of Veterinary Sports Medicine and Rehabilitation. Photos courtesy of VOSM except where noted

Case:
Shazam is a 3-year-old male Border
Collie who presented to VOSM for a
left forelimb lameness and history of
bilateral carpus (wrist) discomfort. At
presentation Shazam was wearing carpal support wraps bilaterally and had
a mildly shortened stride in the left
forelimb. Once the support wraps were
removed, no signs of lameness or gait
abnormality were noted. On palpation
no discomfort was noted on flexion or
extension of the left carpus. Very mild
swelling and effusion was noted in the
left carpus. There were no signs of collateral instability or complete breakdown in the palmar supporting structures. During the stance phase, Shazam
showed no evidence of carpal hyperextension. The left elbow and shoulder
palpated within normal limits. Radiographs of the right and left carpi were
obtained and revealed no significant
pathology. A diagnostic ultrasound of
the carpi was performed and showed
inflammation of the deep portion of
the left flexor carpi ulnaris. Findings
were consistent with a grade I-II/V left
flexor carpi ulnaris strain.

Introduction
The flexor carpi ulnaris (FCU) is a muscle
that runs along the caudolateral aspect
of the forelimb. It originates at the elbow and attaches on the carpus (wrist).
November 16 | Clean Run

See Figure 1. The FCU functions to flex the carpus with abduction. It is thought that
repetitive stress and strains on the tissue lead to a weakened tendon. Injuries can
then occur when excessive load is applied to the tendon and often occur at the FCU
on the wrist.
1

Flexor carpi ulnaris,
ulnar head
Flexor carpi ulnaris,
humeral head

The flexor carpi ulnaris
(FCU) is a muscle that
runs along the
caudolateral aspect
of the forelimb that
originates at the elbow
and attaches on the
carpus (wrist). It has two
heads-the humeral
head and the ulnar head.

© cleAnrUn

Diagnosis
Common clinical signs include a mild to moderate weight-bearing lameness and
swelling caudal and proximal to the carpus. Radiographs are often performed
to rule out concurrent fractures, and often show soft tissue thickening on the
49



Table of Contents for the Digital Edition of Clean Run - November 2016

Table of Contents
Clean Run - November 2016 - Cover1
Clean Run - November 2016 - Cover2
Clean Run - November 2016 - Table of Contents
Clean Run - November 2016 - 4
Clean Run - November 2016 - 5
Clean Run - November 2016 - 6
Clean Run - November 2016 - 7
Clean Run - November 2016 - 8
Clean Run - November 2016 - 9
Clean Run - November 2016 - 10
Clean Run - November 2016 - 11
Clean Run - November 2016 - 12
Clean Run - November 2016 - 13
Clean Run - November 2016 - 14
Clean Run - November 2016 - 15
Clean Run - November 2016 - 16
Clean Run - November 2016 - 17
Clean Run - November 2016 - 18
Clean Run - November 2016 - 19
Clean Run - November 2016 - 20
Clean Run - November 2016 - 21
Clean Run - November 2016 - 22
Clean Run - November 2016 - 23
Clean Run - November 2016 - 24
Clean Run - November 2016 - 25
Clean Run - November 2016 - 26
Clean Run - November 2016 - 27
Clean Run - November 2016 - 28
Clean Run - November 2016 - 29
Clean Run - November 2016 - 30
Clean Run - November 2016 - 31
Clean Run - November 2016 - 32
Clean Run - November 2016 - 33
Clean Run - November 2016 - 34
Clean Run - November 2016 - 35
Clean Run - November 2016 - 36
Clean Run - November 2016 - 37
Clean Run - November 2016 - 38
Clean Run - November 2016 - 39
Clean Run - November 2016 - 40
Clean Run - November 2016 - 41
Clean Run - November 2016 - 42
Clean Run - November 2016 - 43
Clean Run - November 2016 - 44
Clean Run - November 2016 - 45
Clean Run - November 2016 - 46
Clean Run - November 2016 - 47
Clean Run - November 2016 - 48
Clean Run - November 2016 - 49
Clean Run - November 2016 - 50
Clean Run - November 2016 - 51
Clean Run - November 2016 - 52
Clean Run - November 2016 - 53
Clean Run - November 2016 - 54
Clean Run - November 2016 - 55
Clean Run - November 2016 - 56
Clean Run - November 2016 - 57
Clean Run - November 2016 - 58
Clean Run - November 2016 - 59
Clean Run - November 2016 - 60
Clean Run - November 2016 - 61
Clean Run - November 2016 - 62
Clean Run - November 2016 - 63
Clean Run - November 2016 - 64
Clean Run - November 2016 - 65
Clean Run - November 2016 - 66
Clean Run - November 2016 - Cover3
Clean Run - November 2016 - Cover4
https://www.nxtbook.com/nxtbooks/cleanrun/1220
https://www.nxtbook.com/nxtbooks/cleanrun/1120
https://www.nxtbook.com/nxtbooks/cleanrun/1020
https://www.nxtbook.com/nxtbooks/cleanrun/0920
https://www.nxtbook.com/nxtbooks/cleanrun/0820
https://www.nxtbook.com/nxtbooks/cleanrun/0720
https://www.nxtbook.com/nxtbooks/cleanrun/0620
https://www.nxtbook.com/nxtbooks/cleanrun/0520
https://www.nxtbook.com/nxtbooks/cleanrun/0420
https://www.nxtbook.com/nxtbooks/cleanrun/0320
https://www.nxtbook.com/nxtbooks/cleanrun/0220
https://www.nxtbook.com/nxtbooks/cleanrun/0120
https://www.nxtbook.com/nxtbooks/cleanrun/1219
https://www.nxtbook.com/nxtbooks/cleanrun/1119
https://www.nxtbook.com/nxtbooks/cleanrun/1019
https://www.nxtbook.com/nxtbooks/cleanrun/0919
https://www.nxtbook.com/nxtbooks/cleanrun/0819
https://www.nxtbook.com/nxtbooks/cleanrun/0719
https://www.nxtbook.com/nxtbooks/cleanrun/0619
https://www.nxtbook.com/nxtbooks/cleanrun/0519
https://www.nxtbook.com/nxtbooks/cleanrun/0419
https://www.nxtbook.com/nxtbooks/cleanrun/0319
https://www.nxtbook.com/nxtbooks/cleanrun/0219
https://www.nxtbook.com/nxtbooks/cleanrun/0119
https://www.nxtbook.com/nxtbooks/cleanrun/1218
https://www.nxtbook.com/nxtbooks/cleanrun/1118
https://www.nxtbook.com/nxtbooks/cleanrun/1018
https://www.nxtbook.com/nxtbooks/cleanrun/0918
https://www.nxtbook.com/nxtbooks/cleanrun/0818
https://www.nxtbook.com/nxtbooks/cleanrun/0718
https://www.nxtbook.com/nxtbooks/cleanrun/0618
https://www.nxtbook.com/nxtbooks/cleanrun/0518
https://www.nxtbook.com/nxtbooks/cleanrun/0418
https://www.nxtbook.com/nxtbooks/cleanrun/0318
https://www.nxtbook.com/nxtbooks/cleanrun/0218
https://www.nxtbook.com/nxtbooks/cleanrun/0118
https://www.nxtbook.com/nxtbooks/cleanrun/1217
https://www.nxtbook.com/nxtbooks/cleanrun/1117
https://www.nxtbook.com/nxtbooks/cleanrun/1017
https://www.nxtbook.com/nxtbooks/cleanrun/0917
https://www.nxtbook.com/nxtbooks/cleanrun/0817
https://www.nxtbook.com/nxtbooks/cleanrun/0717
https://www.nxtbook.com/nxtbooks/cleanrun/0617
https://www.nxtbook.com/nxtbooks/cleanrun/0517
https://www.nxtbook.com/nxtbooks/cleanrun/0417
https://www.nxtbook.com/nxtbooks/cleanrun/0317
https://www.nxtbook.com/nxtbooks/cleanrun/0217
https://www.nxtbook.com/nxtbooks/cleanrun/0117
https://www.nxtbook.com/nxtbooks/cleanrun/1216
https://www.nxtbook.com/nxtbooks/cleanrun/1116
https://www.nxtbook.com/nxtbooks/cleanrun/1016
https://www.nxtbook.com/nxtbooks/cleanrun/0916
https://www.nxtbook.com/nxtbooks/cleanrun/0816
https://www.nxtbook.com/nxtbooks/cleanrun/0716
https://www.nxtbook.com/nxtbooks/cleanrun/0616
https://www.nxtbook.com/nxtbooks/cleanrun/0516
https://www.nxtbook.com/nxtbooks/cleanrun/0416
https://www.nxtbook.com/nxtbooks/cleanrun/0316
https://www.nxtbook.com/nxtbooks/cleanrun/0216
https://www.nxtbook.com/nxtbooks/cleanrun/0116
https://www.nxtbook.com/nxtbooks/cleanrun/1215
https://www.nxtbook.com/nxtbooks/cleanrun/1115
https://www.nxtbook.com/nxtbooks/cleanrun/1015
https://www.nxtbook.com/nxtbooks/cleanrun/0915
https://www.nxtbook.com/nxtbooks/cleanrun/0815
https://www.nxtbook.com/nxtbooks/cleanrun/0715
https://www.nxtbook.com/nxtbooks/cleanrun/0615
https://www.nxtbook.com/nxtbooks/cleanrun/0515
https://www.nxtbook.com/nxtbooks/cleanrun/0415
https://www.nxtbook.com/nxtbooks/cleanrun/0315
https://www.nxtbook.com/nxtbooks/cleanrun/0215
https://www.nxtbook.com/nxtbooks/cleanrun/0115
https://www.nxtbook.com/nxtbooks/cleanrun/1214
https://www.nxtbook.com/nxtbooks/cleanrun/1114
https://www.nxtbook.com/nxtbooks/cleanrun/1014
https://www.nxtbook.com/nxtbooks/cleanrun/0914
https://www.nxtbook.com/nxtbooks/cleanrun/0814
https://www.nxtbook.com/nxtbooks/cleanrun/0714
https://www.nxtbook.com/nxtbooks/cleanrun/0614
https://www.nxtbook.com/nxtbooks/cleanrun/0514
https://www.nxtbook.com/nxtbooks/cleanrun/0414
https://www.nxtbook.com/nxtbooks/cleanrun/0314
https://www.nxtbook.com/nxtbooks/cleanrun/0214
https://www.nxtbook.com/nxtbooks/cleanrun/0114
https://www.nxtbook.com/nxtbooks/cleanrun/1213
https://www.nxtbook.com/nxtbooks/cleanrun/1113
https://www.nxtbook.com/nxtbooks/cleanrun/1013
https://www.nxtbook.com/nxtbooks/cleanrun/0913
https://www.nxtbook.com/nxtbooks/cleanrun/0813
https://www.nxtbook.com/nxtbooks/cleanrun/0713
https://www.nxtbook.com/nxtbooks/cleanrun/0613
https://www.nxtbook.com/nxtbooks/cleanrun/0513
https://www.nxtbook.com/nxtbooks/cleanrun/0413
https://www.nxtbook.com/nxtbooks/cleanrun/0313
https://www.nxtbook.com/nxtbooks/cleanrun/0213
https://www.nxtbook.com/nxtbooks/cleanrun/0113
https://www.nxtbook.com/nxtbooks/cleanrun/1212
https://www.nxtbook.com/nxtbooks/cleanrun/1112
https://www.nxtbook.com/nxtbooks/cleanrun/1012
https://www.nxtbook.com/nxtbooks/cleanrun/0912
https://www.nxtbook.com/nxtbooks/cleanrun/0812
https://www.nxtbook.com/nxtbooks/cleanrun/0712
https://www.nxtbook.com/nxtbooks/cleanrun/0612
https://www.nxtbook.com/nxtbooks/cleanrun/0512
https://www.nxtbook.com/nxtbooks/cleanrun/0412
https://www.nxtbook.com/nxtbooks/cleanrun/0312
https://www.nxtbook.com/nxtbooks/cleanrun/0212
https://www.nxtbook.com/nxtbooks/cleanrun/0112
https://www.nxtbook.com/nxtbooks/cleanrun/1211
https://www.nxtbook.com/nxtbooks/cleanrun/1111
https://www.nxtbook.com/nxtbooks/cleanrun/1011
https://www.nxtbook.com/nxtbooks/cleanrun/0911
https://www.nxtbook.com/nxtbooks/cleanrun/0811
https://www.nxtbook.com/nxtbooks/cleanrun/0711
https://www.nxtbook.com/nxtbooks/cleanrun/0611
https://www.nxtbook.com/nxtbooks/cleanrun/0511
https://www.nxtbook.com/nxtbooks/cleanrun/0411
https://www.nxtbook.com/nxtbooks/cleanrun/0311
https://www.nxtbook.com/nxtbooks/cleanrun/0211
https://www.nxtbook.com/nxtbooks/cleanrun/0111
https://www.nxtbook.com/nxtbooks/cleanrun/1210
https://www.nxtbook.com/nxtbooks/cleanrun/1110
https://www.nxtbook.com/nxtbooks/cleanrun/1010
https://www.nxtbook.com/nxtbooks/cleanrun/0910
https://www.nxtbook.com/nxtbooks/cleanrun/0810
https://www.nxtbook.com/nxtbooks/cleanrun/0710
https://www.nxtbook.com/nxtbooks/cleanrun/0610
https://www.nxtbook.com/nxtbooks/cleanrun/0510
https://www.nxtbook.com/nxtbooks/cleanrun/0410
https://www.nxtbook.com/nxtbooks/cleanrun/0310
https://www.nxtbook.com/nxtbooks/cleanrun/0210
https://www.nxtbook.com/nxtbooks/cleanrun/0110
https://www.nxtbook.com/nxtbooks/cleanrun/1209
https://www.nxtbook.com/nxtbooks/cleanrun/1109
https://www.nxtbook.com/nxtbooks/cleanrun/1009
https://www.nxtbook.com/nxtbooks/cleanrun/0909
https://www.nxtbook.com/nxtbooks/cleanrun/0809
https://www.nxtbook.com/nxtbooks/cleanrun/0709
https://www.nxtbook.com/nxtbooks/cleanrun/comp-demo
https://www.nxtbook.com/nxtbooks/cleanrun/0609
https://www.nxtbook.com/nxtbooks/cleanrun/0509
https://www.nxtbook.com/nxtbooks/cleanrun/0409
https://www.nxtbook.com/nxtbooks/cleanrun/0309
https://www.nxtbook.com/nxtbooks/cleanrun/0209
https://www.nxtbook.com/nxtbooks/cleanrun/0109
https://www.nxtbook.com/nxtbooks/cleanrun/1208
https://www.nxtbook.com/nxtbooks/cleanrun/1108
https://www.nxtbook.com/nxtbooks/cleanrun/1008
https://www.nxtbook.com/nxtbooks/cleanrun/0908
https://www.nxtbook.com/nxtbooks/cleanrun/0808
https://www.nxtbook.com/nxtbooks/cleanrun/0708
https://www.nxtbook.com/nxtbooks/cleanrun/0608
https://www.nxtbook.com/nxtbooks/cleanrun/0508
https://www.nxtbook.com/nxtbooks/cleanrun/0408
https://www.nxtbook.com/nxtbooks/cleanrun/0308
https://www.nxtbook.com/nxtbooks/cleanrun/0208
https://www.nxtbook.com/nxtbooks/cleanrun/0108
https://www.nxtbook.com/nxtbooks/cleanrun/1207
https://www.nxtbook.com/nxtbooks/cleanrun/1107
https://www.nxtbook.com/nxtbooks/cleanrun/1007
https://www.nxtbook.com/nxtbooks/cleanrun/0907
https://www.nxtbook.com/nxtbooks/cleanrun/0807
https://www.nxtbook.com/nxtbooks/cleanrun/0707
https://www.nxtbook.com/nxtbooks/cleanrun/0607
https://www.nxtbook.com/nxtbooks/cleanrun/0507
https://www.nxtbook.com/nxtbooks/cleanrun/0407
https://www.nxtbook.com/nxtbooks/cleanrun/0307
https://www.nxtbook.com/nxtbooks/cleanrun/0207
https://www.nxtbook.com/nxtbooks/cleanrun/0107
https://www.nxtbook.com/nxtbooks/cleanrun/1206
https://www.nxtbook.com/nxtbooks/cleanrun/1106
https://www.nxtbook.com/nxtbooks/cleanrun/1006
https://www.nxtbook.com/nxtbooks/cleanrun/0906
https://www.nxtbook.com/nxtbooks/cleanrun/0806
https://www.nxtbook.com/nxtbooks/cleanrun/0706
https://www.nxtbook.com/nxtbooks/cleanrun/0606
https://www.nxtbook.com/nxtbooks/cleanrun/0506
https://www.nxtbook.com/nxtbooks/cleanrun/0406
https://www.nxtbook.com/nxtbooks/cleanrun/0306
https://www.nxtbook.com/nxtbooks/cleanrun/0206
https://www.nxtbook.com/nxtbooks/cleanrun/0106
https://www.nxtbookmedia.com