I would like to dedicate this article to those patients who are seeking rehabilitation after anterior cruciate ligament (acl) injury. Although this journal will make us look like “grannies”, I decided to make it happen. The idea of writing such a journal has been a long time coming. In my daily practice, I often meet young patients with acl injuries who have undergone arthroscopic surgery in other hospitals in Shanghai, but unfortunately, they are often unable to find a place to recover. One young white-collar man, who was already six months post-operative, learned from visiting foreign websites that a kind of isokinetic training is available abroad after acl surgery. However, his search for biodex isokinetic training in Shanghai was unsuccessful for half a year. Finally, he found us through the internet with great effort. Although we were in the same city, we had no chance to meet. Such a story did not only happen to this one patient. In Shanghai, a leading medical city, there are many hospitals that perform arthroscopic surgery, but very few are able to provide complete perioperative rehabilitation in conjunction with surgical treatment. One young high school student recently underwent arthroscopic surgery, and because he had a meniscus suture performed in conjunction with his acl reconstruction, his rehabilitation plan was far different from the usual single post-acl reconstruction rehabilitation. The surgeon who operated on the child was very experienced and the surgery was very successful, but the rehabilitation services at that hospital only provided a generic rehabilitation plan (even this is not done in many hospitals in Shanghai). The child’s mother felt that something was not right, so she went online for help, and after a few weeks, she linked to our “Orthopedic Rehabilitation” blog. She was overjoyed and came to our clinic the next day, and we promptly adjusted the rehabilitation plan for her child. There are other post-acl patients who have severe contractures and adhesions in their knee joints due to the lack of professional rehabilitation guidance and treatment. Isometric muscle strength assessment and training is an important means of monitoring and evaluating the progress of ACL rehabilitation and is currently the most effective method of muscle strength training, but due to the high price of this equipment, many large hospitals in China are not equipped with this equipment even in some arthroscopic centers. The Department of Orthopedics of the Ninth Hospital, as the Shanghai Clinical Medical Center of Joint Surgery, is equipped with the biodex isometric test training system, which provides a boon to the post-operative rehabilitation of patients with acl reconstruction. The orthopedic rehabilitation also has a professional team that tailors each acl reconstruction patient to develop a personalized rehabilitation plan. Patients receive pre-operative biodex isometric muscle strength testing to clarify the difference in muscle strength between the affected side and the healthy side of the quadriceps and s-string muscles; they begin bedside rehabilitation right after surgery; they are given a customized home rehabilitation plan upon discharge; and they receive outpatient follow-up visits from both an orthopedic surgeon and a rehabilitation physician one month after surgery. This constitutes the philosophy and process of perioperative acl rehabilitation advocated by Orthopedic Rehabilitation. Since most of the acl injuries are suffered by young people who love sports, they are eager to receive timely and effective rehabilitation treatment after surgery to accelerate their recovery process and return to sports as soon as possible. The peri-operative rehabilitation medical services we provide, which are closely integrated with surgery and rehabilitation, have been well received by patients.