The PRETEND Trial: A mixed methods study evaluating PREferences, feasibiliTy, and costs of pErformiNg sham surgery Trials involving major surgical procedures

将患者随机分为“主动”或“假”（假装）手术并比较结果是测试手术效果的最佳方法。然而，很少有骨科手术以这种方式进行测试。本研究的目的是确定在1。确定患者和外科医生考虑参与的条件2.估计要花多少钱。

Randomising patients to receive either an 'active' or a 'sham' (pretend) surgery and comparing the outcomes is the best way to test how effective a surgical procedure is. However, few orthopaedic surgeries have been tested in this way. This study aims to determine the feasibility of conducting a sham surgery trial in a major orthopaedic procedure by 1. identifying the conditions under which patients and surgeons would consider participating 2. Estimating how much it would cost.