Used item. Do not purchase.（Patellar Tendon Strap ）

This used Patellar Tendon Strap has a trust score of 87 out of 100, which is a solid score, but the explicit "Do not purchase" warning associated with it as a used item warrants significant caution. The overall rating of 3.9 out of 5 from 8 analyzed reviews out of a total of 131 suggests a generally positive reception, with reviewers frequently mentioning positive attributes such as "support" and that the strap was "comfortable" and would "stay in place." However, the presence of critical feedback, specifically mentioning "knee pain," alongside the warning about the item being used, indicates that this product may not be a reliable solution for everyone experiencing knee discomfort. The inclusion of generic promotional language like "recommend" in some reviews, while not inherently negative, slightly dilutes the authenticity of the feedback, though the high reviewer credibility score of 95/100 suggests that the reviewers themselves are generally trustworthy. The trust score of 87/100, while good in isolation, is significantly undermined by the "Used item. Do not purchase" designation. This warning overrides the positive sentiment derived from the factor scores and the majority of the review content. While reviewers often praised the strap for its "support" and its ability to "stay in place," one reviewer explicitly stated, "Still not sure if these worked for me. I may go back to a more traditional compression knee brace. It was worth a try." This quote highlights that the effectiveness of the patellar tendon strap is not universal, and some users may not find it to be a sufficient solution for their knee pain. Given the product is being sold as used, there is an added layer of uncertainty regarding its condition and remaining efficacy, making the purchase riskier. Considering the data, the primary concern is the "Used item. Do not purchase" directive, which should be the overriding factor for any potential buyer. While the strap appears to offer some benefits in terms of "support" and comfort for many, as evidenced by the positive mentions in reviews, the critical feedback regarding "knee pain" and the uncertainty expressed by users like the one who "may go back to a more traditional compression knee brace" suggest it's not a guaranteed fix. Therefore, while the product itself might have some merit when new, purchasing it in a used condition is strongly discouraged due to the inherent risks and the explicit warning provided.