Page 200 - Canine Lameness
P. 200

Table 13.1  Key features for selected diseases affecting the carpal region.
                                      Diagnostic test of
                Disease   Common signalment  choice  Exam findings  Treatment  Clinical pearls  Terminology
                Hyperextension   All breeds  Stress radiographs  Increased carpal   Mild injuries are protected  Conservative
                injury                           extension  with a brace or splint.   management most
                                                            Arthrodesis for severe   often fails
                                                            injuries
                Carpal bone   Racing and sporting   Computed   Swelling and loss   Bone screws placed with   Use intraoperative
                fractures  dogs       tomography  of carpal flexion  precision  fluoroscopy to enhance
                                                                           precision of screw
                                                                           placement
                Distal R/U   Toy-breed dogs  Radiographs  Swelling, pain, and  Surgical Fixation  Frequently happen
                fractures                        obvious instability       without substantial
                                                                           trauma
                Antebrachial   Chondrodystrophic   Palpation,   Varus or valgus,   External fixation or bone   Deformities should be   Valgus = lateral
                deformities  dogs and physeal   radiography, and   length deficit, and   plate  treated promptly,   deviation
                          injuries    computed   elbow joint               before the onset of joint  Varus = medial
                                      tomography  subluxation              subluxation  deviation
                Lack or loss of   Large-breed growing  Gait observation   Lack of extension  Conservative, coaptation,   Optimize growth in   Flexural deformity
                carpal extension  dogs  and goniometry      and exercise   growing dogs by   and carpal laxity
                                                                           decreasing food intake  syndrome
                Immune-mediated  Large-breed   Radiographs and   Effusion, pain, and  Immunosuppressive drugs  Severe carpal effusion
                polyarthritis  (nonerosive) and   arthrocentesis  hyperextension  and pancarpal arthrodesis  suggests polyarthritis
                          small-breed (erosive)                            Instability suggests that
                                                                           polyarthritis is erosive
                Hypertrophic   Large-breed puppies  Clinical signs and   Metaphyseal pain   Supportive care  Most patients will
                osteodystrophy        radiographs  and swelling and        recover
                (HOD)                            hyperthermia              Antebrachial
                                                                           deformities can occur as
                                                                           a consequence of HOD





























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