Credibility, educational quality, and specialty-specific depth of meniscal injury information on Douyin: a cross-sectional study.

Background: We evaluate the credibility, overall educational quality, and specialty-specific depth of Douyin videos on meniscal injury, examined the relationship between information quality and dissemination metrics, and proposed improvement strategies. Methods: On July 31, 2025, two Chinese keywords were searched under three sorting modes; the top 50 results per query were collected ( Results: Median (IQR) scores were JAMA 2 (2-2), DISCERN 2 (2-2), GQS 2 (1-3), and MSS 3 (1-8), indicating low transparency, evidence disclosure, and educational value, with variable meniscus-specific depth. Across source categories, JAMA, DISCERN, and MSS differed significantly (all Conclusions: Using a three-tier framework, we found low professionalism, transparency, and educational value in Douyin videos on meniscal injury. Engagement appears decoupled from quality. We recommends a minimum disclosure checklist, platform-level structured publishing and credibility labels with weighted distribution, and standardized short videos by medical institutions integrated with offline education. The findings provide empirical evidence and practical implications for improving health information quality and informing governance strategies on Chinese short-video platforms.