Applied Evidence

Which patients might benefit from platelet-rich plasma?

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References

Rotator cuff tendinopathy

❯ ❯ ❯   Consider PRP for short-term pain relief

Painful conditions of the rotator cuff include impingement syndrome, tendonitis, and partial and complete tears. A 2021 RCT (N = 58) by Dadgostar et al21 comparing PRP injection to corticosteroid therapy (methylprednisolone and lidocaine) for the treatment of rotator cuff tendinopathy showed significant improvement in VAS scores at 3 months in the PRP group compared to the corticosteroid group (6.66 ± 2.26 to 3.08 ± 2.14 vs 5.53 ± 1.80 to 3.88 ± 1.99, respectively; P = .023). There also were more significant improvements in adduction in the PRP group compared to the corticosteroid group (20.50° ± 8.23° to 28° ± 3.61° vs 23.21° ± 7.09° to 28.46° ± 4.18°, respectively; P = .011), and external rotation (59.66° ± 23.81° to 76.66° ± 18.30° vs 57.14°± 24.69° to 65.57° ± 26.39° for the PRP and corticosteroid groups, respectively; P = .036).21

Another RCT (N = 99) by Kwong et al22 comparing PRP to corticosteroids found similar short-term advantages of LP-PRP with an improved VAS score (–13.6 vs 0.4; P = .03), American Shoulder and Elbow Surgeons score (13.0 vs 2.9; P = .02), and Western Ontario Rotator Cuff Index score (16.8 vs 5.8; P = .03). However, there was no long-term benefit of PRP over corticosteroids found at 12 months.22

A 2021 systematic review and meta-­analysis by Hamid et al23 that included 8 RCTs (N = 976) favored PRP over control (no injection, saline injections, and/or shoulder rehabilitation) with improved VAS scores at 12 months (SMD = –0.5; 95% CI, –0.7 to –0.2; P < .001). The evidence on functional outcome was mixed. Data pooled from 2 studies (n = 228) found better Shoulder Pain and Disability Index (SPADI) scores compared to controls at 3- and 6-month follow-ups. However, there were no significant differences in Disabilities of the Arm, Shoulder and Hand (DASH) scores between the 2 groups.23

Patellar tendinopathy

❯ ❯ ❯   Consider using PRP for return to sport

Patellar tendinopathy, a common MSK condition encountered in the primary care setting, has an overall prevalence of 22% in elite athletes at some point in their career.24 ­Nonsurgical management options include rest, ice, eccentric and isometric exercises, anti-­inflammatory drugs, extracorporeal shock wave therapy (ESWT), and dry needling (DN).

Currently, corticosteroid injections are the only intraarticular therapy recommended by international guidelines for hip OA.

A 2014 RCT (N = 23) evaluating DN vs PRP for patellar tendinopathy favored PRP with improved VAS scores (mean ± SD = 25.4 ± 23.2 points; P = .01 vs 5.2 ± 12.5 points; P = .20) at 12 weeks (P = .02). However, at ≥ 26 weeks, the improvement in pain and function scores was similar between the DN and PRP groups (33.2 ± 14.0 points; P = .001 vs 28.9 ± 25.2 points; P = .01). Notably, there was significantly more improvement in the PRP group at 12 weeks (P = .02) but not at 26 weeks (P = .66).25

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