The Canine Orthopedic Index. Step 3: Responsiveness testing

Area of Science:

• Veterinary Medicine
• Pharmacology
• Animal Health

Background:

• Osteoarthritis (OA) is a prevalent degenerative joint disease in dogs.
• Assessing treatment efficacy in canine OA requires reliable outcome measures.
• The Canine Orthopedic Index (COI) is a tool designed to evaluate OA in dogs.

Purpose of the Study:

• To evaluate the Canine Orthopedic Index's (COI) ability to detect treatment-related changes in dogs with osteoarthritis (OA).
• To compare the efficacy of non-steroidal anti-inflammatory drugs (NSAIDs) versus placebo in managing canine OA using the COI.

Main Methods:

• A double-blind, randomized, placebo-controlled trial was conducted with 80 dogs diagnosed with OA.
• Owners completed the COI at baseline (Day 0) and after 14 days of treatment (Day 14).
• Dogs received either carprofen (an NSAID) or a placebo, and changes in COI scores were analyzed between groups.

Main Results:

• Dogs treated with carprofen showed statistically significant reductions in overall COI scores, as well as stiffness, gait, and function scores, compared to the placebo group.
• No significant difference was observed in the quality of life score between the carprofen and placebo groups.
• The study demonstrated the COI's sensitivity in detecting improvements in key OA indicators with NSAID treatment.

Conclusions:

• The Canine Orthopedic Index (COI) is a sensitive tool for measuring improvements in stiffness, gait, and function in dogs with OA treated with NSAIDs.
• The quality of life component of the COI did not appear sensitive to short-term NSAID treatment in this study.
• The COI can reliably detect expected changes in dogs with OA receiving NSAID therapy compared to placebo.