PMID- 35425843 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220429 IS - 2325-9671 (Print) IS - 2325-9671 (Electronic) IS - 2325-9671 (Linking) VI - 10 IP - 4 DP - 2022 Apr TI - Effectiveness of Platelet-Rich Plasma for Lateral Epicondylitis: A Systematic Review and Meta-analysis Based on Achievement of Minimal Clinically Important Difference. PG - 23259671221086920 LID - 10.1177/23259671221086920 [doi] LID - 23259671221086920 AB - BACKGROUND: The effectiveness of platelet-rich plasma (PRP) injection in the treatment of lateral epicondylitis remains debatable. PURPOSE: To evaluate the effectiveness of PRP in lateral epicondylitis treatment using minimal clinically important difference (MCID) values as a reference and to investigate if leukocyte content can influence the effectiveness of the therapy. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: Following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, the authors searched the Medline and Scopus databases for studies on lateral epicondylitis and PRP therapy that used the following patient-reported outcome measures (PROMs): visual analog scale (VAS) for pain; Disabilities of the Arm, Shoulder and Hand (DASH); Patient-Rated Tennis Elbow Evaluation (PRTEE); and Mayo Clinic Performance Index (MAYO). The weighted arithmetic means for the PROMs were calculated at baseline (week 0) and follow-up weeks 4, 8, 12, 24, 52, and 104. The mean differences in outcomes (DeltaVAS, DeltaDASH, DeltaPRTEE, and DeltaMAYO) were compared with the MCID values at each follow-up point. In addition, the effectiveness of leukocyte-rich PRP (LR-PRP) versus leukocyte-poor PRP (LP-PRP) was also compared. The Student t test was used in all analyses. RESULTS: A total of 26 studies were included in the analysis. After PRP injection, all PROM scores improved with time. The scores improved significantly from baseline to each follow-up time (P < .0001), with the exception of the PRTEE (no significant difference at follow-up weeks 12 and 52). The mean difference in scores from baseline exceeded the respective MCIDs from weeks 4 to 104 for the VAS and DASH, from weeks 4 to 52 for the MAYO, and from weeks 8 to 52 for the PRTEE. The MCID for each of the PROMs was exceeded at almost every observation period in both the LR-PRP and the LP-PRP systems. CONCLUSION: Based on comparisons with the MCID values of commonly used outcome scores, PRP seems to be an effective form of treatment for lateral epicondylitis. Both the LR- PRP and the LP- PRP systems were effective in the context of meeting the MCID. CI - (c) The Author(s) 2022. FAU - Niemiec, Pawel AU - Niemiec P AD - Department of Biochemistry and Medical Genetics, School of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland. FAU - Szyluk, Karol AU - Szyluk K AD - District Hospital of Orthopaedics and Trauma Surgery, Piekary Slaskie, Poland. AD - Department of Physiotherapy, Faculty of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland. FAU - Jarosz, Alicja AU - Jarosz A AD - Department of Biochemistry and Medical Genetics, School of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland. FAU - Iwanicki, Tomasz AU - Iwanicki T AD - Department of Biochemistry and Medical Genetics, School of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland. FAU - Balcerzyk, Anna AU - Balcerzyk A AD - Department of Biochemistry and Medical Genetics, School of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland. LA - eng PT - Journal Article PT - Review DEP - 20220408 PL - United States TA - Orthop J Sports Med JT - Orthopaedic journal of sports medicine JID - 101620522 PMC - PMC9003647 OTO - NOTNLM OT - lateral epicondylitis OT - minimal clinically important difference OT - platelet-rich plasma OT - tennis elbow COIS- One or more of the authors has declared the following potential conflict of interest or source of funding: This study was funded by Medical University of Silesia in Katowice, Poland (grant No. KNW-1-008/N/7/K). AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto. EDAT- 2022/04/16 06:00 MHDA- 2022/04/16 06:01 PMCR- 2022/04/08 CRDT- 2022/04/15 05:32 PHST- 2021/12/01 00:00 [received] PHST- 2022/01/10 00:00 [accepted] PHST- 2022/04/15 05:32 [entrez] PHST- 2022/04/16 06:00 [pubmed] PHST- 2022/04/16 06:01 [medline] PHST- 2022/04/08 00:00 [pmc-release] AID - 10.1177_23259671221086920 [pii] AID - 10.1177/23259671221086920 [doi] PST - epublish SO - Orthop J Sports Med. 2022 Apr 8;10(4):23259671221086920. doi: 10.1177/23259671221086920. eCollection 2022 Apr.