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Background: The term digitalization is in trend. In addition to modernizing existing structures and converting analogue to digital processes, there are now a large number of digital applications available in the medical field. This is also increasingly influencing prehabilitation and rehabilitation., Objective: The aim of this article is to provide an overview of digitalization options in the field of rehabilitation, taking the current literature into account., Material and Methods: A systematic literature search was carried out on the topic of digitalization in rehabilitation, especially in relation to interventions and diseases of the knee joint, using among others PubMed and PEDro., Results and Conclusion: Having arrived in "Rehabilitation 4.0", the networking of all infrastructures as well as the increasing use of artificial intelligence, the individualization of offers for healthcare companies and patients are playing an increasing role and are experiencing a real hype due to the supposedly infinite possibilities; however, the data situation on various digital offers in rehabilitation is inconsistent. The digital transformation provides many opportunities and challenges for rehabilitation, but despite all the euphoria it has to be critically questioned., (© 2023. The Author(s), under exclusive licence to Springer Medizin Verlag GmbH, ein Teil von Springer Nature.)

Introduction: High tibial osteotomy (HTO) is a valid and joint preserving surgical technique to treat medial degenerative osteoarthritis (OA) in young and active patients. A recent study shows that patients' expectations of osteotomy around the knee are high, but OA progression and potential conversion to a total knee arthroplasty (TKA) were underestimated. The aim of this study was to investigate surgeons' expectations of HTO and to compare the results to the patients' expectations and actual outcomes reported in the literature., Methods: 461 surgeons were questioned online using the 'Hospital for Special Surgery Knee Surgery Expectations Survey (HFSS-KSES)' and a ten-item non-validated questionnaire to investigate the expectations of HTO. Two subgroups were formed to investigate differences regarding the surgeons' experience. Statistical analysis was performed using IBM SPSS Statistics., Results: Surgeons' expectations of HTO were rated between very and little important with pain reduction being the most important item on the HFSS-KSES. Furthermore, 'improving the ability to walk', 'to perform daily activities', 'having confidence in the knee', and 'avoiding future degeneration' were rated of high importance. An important difference regarding the experience was the lower expectations on delay/prevention of TKA of less-experienced surgeons., Conclusion: Surgeons' expectations of HTO are high but nevertheless different to the patients' expectations reported in the literature. Also, expectations for the delay/prevention of TKA differed regarding the experience of surgeons. While pain reduction represents one of the most important items for surgeons and patients, the expected outcome regarding the delay/prevention of a TKA and returning to sports differs to the patients' expectations and to the actual outcome reported in the literature. This should be considered when performing the preoperative informed consent., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Introduction: Rehabilitation protocols following anterior cruciate ligament (ACL) reconstruction often differ among orthopaedic surgeons. The primary aim of this study was to investigate which follow-up treatment is recommended by "AGA instructors" certified by the German-speaking Association for Arthroscopic and Open Joint Surgery (AGA). The secondary aim was to compare these findings with the current literature., Material and Methods: A structured anonymous online survey was performed with "AGA instructors" specialised in knee or ACL surgery. All participants were asked about their recommendations for rehabilitation following isolated ACL reconstruction using a questionnaire containing 23 items., Results: 117 out of 218 mail questionnaires were fully completed and analysed. 96.5 % of all surgeons allowed full weight-bearing after 4 weeks or earlier, 52.6 % put a limit on knee flexion, 9.7 % on knee extension after the operation. A brace was prescribed by 82.8 % of all participants. During the first six weeks, isometric training and closed-chain exercises were recommended by the majority of surgeons. Riding a bicycle or driving a car after 6 weeks or earlier was permitted by 78.5 % and 86.2 %, respectively. Jogging (65.5 %) or jumping activities (67.0 %) were allowed after 3 months or earlier. Skiing (53.0 %) or contact/team sport (55.2 % / 46.2 %) was often permitted after 12 months. 82.6 % of all surgeons would like to use return-to-sport test protocols., Conclusion: Rehabilitation protocols differ significantly even among experienced knee surgeons working as instructors. Their recommendations are often not evidence-based considering the current literature., Competing Interests: Die Autoren geben an, dass kein Interessenkonflikt besteht., (© Georg Thieme Verlag KG Stuttgart · New York.)