PMID- 29268731 OWN - NLM STAT- MEDLINE DCOM- 20180827 LR - 20220411 IS - 1471-2474 (Electronic) IS - 1471-2474 (Linking) VI - 18 IP - 1 DP - 2017 Dec 21 TI - The efficacy of multiple versus single hyaluronic acid injections: a systematic review and meta-analysis. PG - 542 LID - 10.1186/s12891-017-1897-2 [doi] LID - 542 AB - BACKGROUND: Intra-articular hyaluronic acid (IA-HA) is a common therapy used to treat knee pain and suppress knee inflammation in knee osteoarthritis (OA), typically prescribed in regimens ranging from a single injection to 5 weekly injections given once weekly. We conducted a systematic review to determine the efficacy of IA-HA, with subgroup analyses to explore the differences in knee pain and adverse events (AEs) across different dosing regimens. METHODS: We conducted a systematic search of the literature to identify studies evaluating IA-HA for the management of knee OA compared to IA-saline. Primary outcome measure was the mean knee pain score at 13 Weeks (3 months) or 26 weeks (6 months). Secondary outcome was the number of treatment-related AEs and treatment-related serious adverse events (SAEs). We evaluated differences in levels of pain and AEs/SAEs between dosing regimens compared to IA-Saline. RESULTS: Thirty articles were included. Overall, IA-HA injections were associated with less knee pain compared to IA-Saline injections for all dosing regimens. 2-4 injections of IA-HA vs. IA-Saline produced the largest effect size at both 3-months and 6-months (Standard mean difference [SMD] = -0.76; -0.98 to -0.53, 95% CI, P < 0.00001, and SMD = -0.36; -0.63 to -0.09 95% CI, P = 0.008, respectively). Additionally, single injection studies yielded a non-significant treatment effect at 3 and 6 months, while >/=5 5 injections demonstrated a significant improvement in pain only at 6 months. Five or more injections of IA-HA were associated with a higher risk of treatment-related AEs compared to IA-Saline (Risk ratio [RR] = 1.67; 1.09 to 2.56 95% CI, p = 0.02), which was a result not seen within the 1 and 2-4 injection subgroups. CONCLUSION: Overall, 2-4 and >/=5 injection regimens provided pain relief over IA-Saline, while single injection did not. Intra-articular injections of HA used in a 2-4 injection treatment regimen provided the greatest benefit when compared to IA-Saline with respect to pain improvement in patients with knee OA, and was generally deemed safe with few to no treatment-related AEs reported across studies. Future research is needed to directly compare these treatment regimens. FAU - Concoff, Andrew AU - Concoff A AUID- ORCID: 0000-0001-8325-760X AD - Departments of Orthopedics and Rheumatology, St. Jude Medical Center, Fullerton, California, USA. Andrew.Concoff@stjoe.org. FAU - Sancheti, Parag AU - Sancheti P AD - Sancheti Institute for Orthopaedics and Rehabilitation, Maharashtra, India. FAU - Niazi, Faizan AU - Niazi F AD - Ferring Pharmaceuticals Inc., Parsippany, NJ, USA. FAU - Shaw, Peter AU - Shaw P AD - Ferring Pharmaceuticals Inc., Parsippany, NJ, USA. FAU - Rosen, Jeffrey AU - Rosen J AD - Department of Orthopaedics & Rehabilitation, New York Presbyterian Queens; Department of Clinical Orthopaedic Surgery, Weill Medical College of Cornell University, New York, NY, USA. LA - eng PT - Comparative Study PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PT - Review PT - Systematic Review DEP - 20171221 PL - England TA - BMC Musculoskelet Disord JT - BMC musculoskeletal disorders JID - 100968565 RN - 0 (Viscosupplements) RN - 9004-61-9 (Hyaluronic Acid) SB - IM MH - Humans MH - Hyaluronic Acid/*administration & dosage MH - Injections, Intra-Articular MH - Osteoarthritis, Knee/*diagnosis/*drug therapy MH - Pain Management/methods MH - Randomized Controlled Trials as Topic/methods MH - Treatment Outcome MH - Viscosupplements/*administration & dosage PMC - PMC5740709 OTO - NOTNLM OT - Intra-articular hyaluronic acid (IA-HA) OT - Knee OT - Osteoarthritis (OA) COIS- ETHICS APPROVAL AND CONSENT TO PARTICIPATE: Not applicable CONSENT FOR PUBLICATION: Not applicable COMPETING INTERESTS: Andrew Concoff: Honorarium received for Ferring Pharmaceuticals advisory board. Parag Sancheti: None. Faizan Niazi: Paid employee of Ferring Pharmaceuticals. Peter Shaw: Paid employee of Ferring Pharmaceuticals. Jeffrey Rosen: Honorarium received for Ferring Pharmaceuticals, Flexion, and Novartis advisory boards. Honorarium received for OrthoGenrx sales force lecture. PUBLISHER'S NOTE: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. EDAT- 2017/12/23 06:00 MHDA- 2018/08/28 06:00 PMCR- 2017/12/21 CRDT- 2017/12/23 06:00 PHST- 2017/06/21 00:00 [received] PHST- 2017/12/08 00:00 [accepted] PHST- 2017/12/23 06:00 [entrez] PHST- 2017/12/23 06:00 [pubmed] PHST- 2018/08/28 06:00 [medline] PHST- 2017/12/21 00:00 [pmc-release] AID - 10.1186/s12891-017-1897-2 [pii] AID - 1897 [pii] AID - 10.1186/s12891-017-1897-2 [doi] PST - epublish SO - BMC Musculoskelet Disord. 2017 Dec 21;18(1):542. doi: 10.1186/s12891-017-1897-2.