Canine osteoarthritis: The diagnostic imager's perspective

Presented by Kerstin Von Puckler, PD, DVM, Dipl. ECVDI, Beatriz Monteiro, DVM, PhD, PgDip, ISFM Adv Cert FB

Continuing education questionnaire

CE credit: 1

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Questions

1. Which of the following are benefits of including a radiographic assessment when working up a patient suspected of having osteoarthritis (OA)? *

Excludes differentials such as neoplasia or inflammatory changes associated with an infectious process

Includes information about the underlying disease process that led to OA

Includes information about morphological changes to establish stages of disease and progression

All the above

2. True or False. It takes approximately 5 years of observer experience to achieve high sensitivity when assessing radiographs for joint disease. *

True

False

3. Low field systems such as MRI allow good visualization of all the following, except: *

Increased water content in the subchondral bone

Bone cysts

Osteophytes

Synovitis, when contrast enhancement is used

4. True or False. OA is often diagnosed in older patients at more advanced stages despite it being a disease of younger dogs with underlying developmental or degenerative changes. *

True

False

5. When diagnosing hip dysplasia, what radiographic evidence are we looking for? *

Osteophyte formation (Morgan’s line) with a divergent joint space

Poor coverage of the femoral head by the acetabulum

First and second choice of answer

Fragmented medial coronoid process

6. All the following are benefits of using radiographs for screening and disease progression in everyday practice, except: *

They are widely available

Follow-up exams require near-identical positioning and technique for good comparison to previous examinations

Relatively low cost compared to other imaging modalities such as CT or MRI

They are noninvasive, and can be repeated multiple times

7. True or False. MRI is the modality of choice for examining the shoulder and stifle joints. *

True

False

8. Which of the following statements regarding limitations of radiographic assessment of OA is false? *

Superimposition of complex anatomic structures can create challenges in accurate assessment

In early stages of OA, radiographs are always normal

Surrounding nonpathological structures may obscure small osteophytes

First and third choice of answer

9. Which of the following can help improve the quality of radiographs? *

Correct positioning

Using the appropriate spatial resolution for the patient’s size

Correct exposure

All the above

10. True or False. Radiographic signs, and not clinical signs, should guide the management of dogs with OA on a case-by-case basis. *

True

False