Background: The purpose of this systematic review was to evaluate outcomes following intra-articular injection of hyaluronic acid (HA) for the treatment of hallux rigidus.

Methods: During April 2024, a systematic review of the MEDLINE, EMBASE, and Cochrane Library databases was performed based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Data collected and analyzed were number of patients, patient age, follow-up, subjective clinical outcomes, complications, and failures.

Results: Five studies were included. In total, 218 patients (218 feet) underwent intra-articular injection of HA at a weighted mean follow-up time of 4.4 ± 1.4 months (range, 3-6). There was an improvement in postinjection visual analog scale (VAS) pain at rest scores, VAS pain during activity scores, American Orthopaedic Foot & Ankle Society (AOFAS) scores, and Foot Health Status Questionnaire (FHSQ) scores. In total, 21 complications (10.0%) were observed, the most common of which was transient postinjection pain in 20 patients (9.6%). There were 7 patients (3.2%) who underwent secondary procedures (3.2%). One randomized control trial (RCT) demonstrated no difference in outcomes between an intra-articular injection of HA compared to an intra-articular injection of saline. One RCT demonstrated superior FHSQ scores following between an intra-articular injection of HA compared to an intra-articular injection of triamcinolone acetonide.

Conclusion: This systematic review suggests that intra-articular injection of HA for the treatment of hallux rigidus may lead to improved clinical outcomes with a low complication rate at short-term follow-up. However, the low level and quality of evidence underscores the need for further high-quality studies to be conducted to identify the precise role of HA in the treatment of hallux rigidus.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11289800PMC
http://dx.doi.org/10.1177/24730114241265109DOI Listing

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