BACKGROUND/AIMS: To examine the informative features and qualities of YouTube videos on high tibial osteotomy (HTO) in terms of the informative reliability of the videos. MATERIALS AND METHODS: The included videos were evaluated individually using two orthopedic surgeons using modified DISCERN score and JAMA Benchmark score. Videos were categorized according to publishing year, video type, video length, number of views, and view rates. Any correlation between these categories and JAMA and modified DISCERN scores were analyzed. RESULTS: Twenty-six videos were available for evaluation. Mean-modified DISCERN and JAMA scores were 2.6 and 2.0 for observer 1 and 2.5 and 1.9 for observer 2, respectively. Median view rates of the videos published between 2008-2011, 2012-2015, and 2015-2020 were 2559.00, 3314.0, and 7458.00, respectively (p=0.003). Other variables showed no difference compared to the publishing year groups (p>0.05). JAMA scores by both observers were positively correlated with video length. A weak positive correlation between mean JAMA score and view rate and a positive correlation between modified DISCERN scores by both observers and video length were found. Mean-modified DISCERN scores and video length values had a strong correlation (p=0.001; r=0.609). A significant correlation was found between JAMA and modified DISCERN scores. Mean modified DISCERN scores showed a moderate increase correlated with the mean JAMA score increase (p=0.017; r=0.463). CONCLUSION: Although the view rate has increased over time, the informative quality and reliability of YouTube videos concerning HTO are low and did not improve over the last decade.