Platelet-rich plasma and stem cells in canine osteoarthritis
7-year-old Rottweiler with elbow osteoarthritis that responds only partially to treatment. The owners have read online that stem cells or platelet-rich plasma "regenerate cartilage".
What is the most appropriate response?
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A. Stem cells regenerate articular cartilage and cure osteoarthritis
Regeneration of functional cartilage has not been demonstrated in dogs with osteoarthritis; any benefit appears to come from paracrine anti-inflammatory effects and is temporary.
B. PRP has superior efficacy to NSAIDs demonstrated in large multicentre trials
Such trials do not exist in dogs: studies are small, with poorly standardised products and limited comparisons.
C. They are contraindicated in dogs and should never be offered
There is no general contraindication: they are investigational treatments with a good safety profile that may be considered while explaining their limitations.
D. There are studies showing short-term improvement, but they are small, heterogeneous and with short follow-up; they may be an adjunct, not a substitute for weight control, exercise and analgesia
Correct. Both PRP and mesenchymal stem cells (mainly adipose-derived) have shown improvement in some studies, but the evidence is limited: small numbers of animals, lack of product standardisation and an effect of uncertain duration.
lightbulb Key takeaway
When considering expensive treatments with limited evidence, inform owners honestly and first make sure the basic management (weight, controlled exercise, multimodal analgesia) is optimised. Assess the response with a validated scale.
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.