[Sense and nonsense of patient apps in arthroplasty]

Apps have played a minor role in the treatment of patients in arthroplasty so far, but they represent an interesting tool for optimizing care and can become an integral part of fast-track surgery. The data in the literature is currently very limited, but promising approaches for the future are emerging. Assessing the quality of apps provided in app stores is difficult. The "DiGA listing" includes prescribable apps, which can support the patient in both the preoperative and postoperative course by optimizing lifestyle habits and providing exercise material. Patient contact with each other and with medical experts seems to have a positive impact on outcome. Most patients also rate the support provided by the app as positive. The development of the app should be done by medical experts, app developers, and patients together.