Which patients might benefit from platelet-rich plasma?

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doi:doi: 10.12788/jfp.0607

Applied Evidence

Which patients might benefit from platelet-rich plasma?

J Fam Pract. 2023 June;72(5):192-199 | doi: 10.12788/jfp.0607

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References

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22. Kwong CA, Woodmass JM, Gusnowski EM, et al. Platelet-rich plasma in patients with partial-thickness rotator cuff tears or tendinopathy leads to significantly improved short-term pain relief and function compared with corticosteroid injection: a double-blind randomized controlled trial. Arthroscopy. 2021;37:510-517. doi: 10.1016/j.arthro.2020.10.037

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A 2022 systematic review and meta-analysis (26 studies; N = 1040) comparing scores at baseline vs 2 years post-PRP showed improvement in VAS scores (7.4 ± 1.30 vs 3.71 ± 2.35; P < .001), DASH scores (60.8 ± 12.5 vs 13.0 ± 18.5; P < .001), Patient-Rated Tennis Elbow Evaluation (55.6 ± 14.7 vs 48.8 ± 4.1; P < .001), and Mayo Clinic Performance Index (55.5 ± 6.1 vs 93.0 ± 6.7; P < .001).³²

Regarding the therapeutic effects of different PRP types in lateral epicondylitis, a 2022 systematic review of 33 studies (N = 2420) found improved function and pain relief with LR-PRP and LP-PRP with no significant differences.³³ Pretreatment VAS scores in the LR-PRP group, which ranged from 6.1 to 8.0, improved to 1.5 to 4.0 at 3 months and 0.6 to 3.3 after 1 year.³³ Similarly, pretreatment VAS scores in the LP-PRP group, which ranged from 4.2 to 8.4, improved to 1.6 to 5.9 at 3 months and 0.7 to 2.7 after 1 year.³⁴ DASH scores also improved in the LR-PRP and LP-PRP groups, with pretreatment scores (LR-PRP, 47.0 to 54.3; LP-PRP, 30.0 to 67.7) improving to 20.0 to 22.0 and 5.5 to 19.0, respectively, at 1 year.³³

Achilles tendinopathy

❯ ❯ ❯ Do not use PRP; evidence is lacking

Achilles tendinopathy, caused by chronic overuse and overload resulting in microtrauma and poor tissue healing, typically occurs in the most poorly vascularized portion of the tendon and is common in runners. First-line treatments for Achilles tendinopathy include eccentric strength training and anti-inflammatory drugs.^34,35 Corticosteroid injections are not recommended, given concern for degraded tendon tissue over time and worse function.³⁴

A 2020 systematic review of 11 randomized and nonrandomized clinical trials (N = 406) found PRP improved Victorian Institute of Sports Assessment—Achilles (VISA-A) scores at 24 weeks compared to other nonsurgical treatment options (41.2 vs 70.12; P < .018).³⁴ However, a higher-quality 2021 systematic review and meta-analysis of 4 RCTs (N = 170) comparing PRP injections with placebo showed no significant difference in VISA-A scores at 3 months (0.23; 95% CI, –0.45 to 0.91), 6 months (0.83; 95% CI, –0.26 to 1.92), and 12 months (0.83; 95% CI, –0.77 to 2.44).³⁶ Therefore, further studies are warranted to evaluate the benefit of PRP injections for Achilles tendinopathy.

Conclusions

While high-quality studies support the use of PRP for knee OA and lateral epicondylitis, they have a moderate-to-high risk for bias. Several RCTs show that PRP provides superior short-term pain relief and range of motion compared to corticosteroids for rotator cuff tendinopathy. Multiple injections of PRP for patellar tendinopathy may accelerate return to sport and improve symptoms over the long term. However, current evidence does not support PRP therapy for Achilles tendinopathy. Given variability in PRP preparation, an accurate interpretation of the literature regarding its use in MSK conditions is recommended (TABLE^{4,6,7,14-18,20-23,25-28,30-34,36}).

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