Assessing the Quality of Consumer Health Information Within the Realm of Shoulder Injuries on TikTok

Background: Shoulder pain and injury are among the most prevalent musculoskeletal presentations in primary care. With the rise of consumer health information on TikTok, it is pivotal to assess and determine whether the information produced by content creators can serve as a supplement for shoulder rehabilitation and injury prevention. Hypothesis: It was hypothesized that content creators with professional degrees and extensive knowledge within the realm of shoulder injuries would yield valuable and accurate health information. Study Design: Cross-sectional study. Methods: On June 18, 2025, #ShoulderInjury was used as the search item under the TikTok search engine. A total of 9286 videos appeared after the initial search. The authors applied an inclusion criteria of at least 100 likes. Exclusion criteria removed irrelevant, non-English, and duplicate videos, resulting in 209 eligible videos for further analysis. These were evaluated using the DISCERN questionnaire, an instrument used to assess consumer health information on a 1 to 5 scale. Two independent raters scored the videos, and interrater reliability was calculated using weighted Cohen kappa. Results: < .001). Educational content yielded the highest mean score (3.29), whereas personal story videos had the lowest (1.89). Weighted Cohen kappa showed very good agreement for physician videos (κ = 0.82), moderate for physical therapists (κ = 0.59), good for nonprofessionals (κ = 0.79), and fair for other professionals (κ = 0.40). Conclusion: This study highlights the potential of TikTok as an effective educational tool when used by qualified professionals. Professionally produced content consistently scored higher on the DISCERN scale. Although the findings are promising, it is important to note limitations, like potential biases in DISCERN scoring due to nonblinded raters, the influence of TikTok's algorithm, and the exclusion of videos with <100 likes. Future research should explore social media's role in medical education and assess how to optimize content delivery and engagement.