Table 1.
Platelet-rich plasma (PRP) compared with control intervention for patellar tendinopathy.
| LOE | Type of Study | Exp | Cont | Follow-up | Control | Preparation Kit | LR/LP | Platelet Conc. | Number of Inj. | PROM | Ref. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Abate et al. | III | 3 arms | PRP 18(18) HVIGI + PRP 18(18) |
18(18) | 6 months | HVIGI saline | Regen Lab A-PRP Kit (Regenlab) | LP | 1.6× NPC (Native Platelet Concentration) | 2 | VISA VAS |
[9] |
| Dragoo et al. | I | 2 arms | 10(8) | 12(9) | 6 months | Dry needling | GPS III (Biomet) | LR | N/R | 1 | VISA Tegner Lysholm VAS SF-12 |
[7] |
| Scott et al. | I | 3 arms | LR 19(19) LP 19(19) |
19(19) | 12 months | Saline | ACs (Arthrex) | LR/LP | LR 3.8 × 230,000 (51,000)/µL LP 3.0 × 227,000 (43,000)/µL |
1 | VISA NPRS GROC |
[6] |
| Vetrano et al. | I | 2 arms | 23(23) | 23(23) | 12 months | ESWT | Recover ps kit (Kaylight) | N/R | 0.89–1.1 × 109 µL | 2 | VISA VAS Blazina |
[8] |
LOE—level of evidence; exp.—no. of patients receiving treatment in experimental group (no. of patients analyzed at final follow-up); cont.—no. of patients receiving treatment in control group (no. of patients analyzed at final follow-up); ESWT—extracorporeal shock wave therapy; HVIGI—high volume image guided injection; LR—leukocyte rich; LP—leukocyte poor; PROM—patient related outcome measures; VAS—visual analog scale; NPRS—Numeric Pain Rating Scale; VISA—Victorian Institute of Sport Assessment; GROC—Global Rating of Change Scales; SF-12—Short Form Survey.