PRP injections for disc-related back pain: what does the latest evidence show?
Eleven randomised trials involving 623 people found no convincing advantage for PRP, but the evidence remains uncertain.
Platelet-rich plasma (PRP) injections have attracted interest as a treatment for persistent back pain. PRP is prepared from a patient's own blood by concentrating the platelets, which release substances involved in tissue repair. The hope is that injecting PRP might reduce inflammation or help damaged tissues recover. But does this translate into meaningful relief for pain thought to arise from a spinal disc?
A systematic review published on 9 October 2026 brought together 11 randomised controlled trials involving 623 patients with chronic discogenic lower back pain. The trials compared PRP with placebo, corticosteroid injections or other active treatments, and assessed pain and spine-related function.
Overall, PRP did not show a statistically significant advantage over the comparison treatments for pain or function at any assessed time point. There was a trend favouring PRP at three and six months, but this was not sufficient to establish effectiveness. The review found considerable differences between the studies, limiting confidence in the pooled results.
Another important finding concerned the injections themselves. Only one of 11 studies (9%) reported enough detail about PRP preparation to allow replication. Just two (18%) fully reported platelet yield and white blood cell counts. PRP is not one standardised product: differences in preparation could plausibly influence results.
The review reported two serious adverse events, both following PRP treatment. Their precise nature and attribution should be checked in the full reports before drawing conclusions about risk.
What does this mean for patients?
This review does not prove that every PRP preparation is ineffective. The authors rated the certainty of evidence as very low, and heterogeneous studies may obscure benefits or harms in particular settings. Nevertheless, the available trials do not provide convincing evidence that PRP is superior to comparison treatments for chronic discogenic back pain.
Patients considering an expensive, privately funded injection should understand that the benefit is uncertain. Larger, rigorously controlled trials using reproducible PRP preparations are needed before it can be confidently recommended.
Original research
PM&R, published online 9 October 2026. Read the original study →