Reverse Drilling Technique in Improving Outcomes After Arthroscopic Anterior Cruciate Ligament Reconstruction

Inclusion Criteria: Patients with definite anterior cruciate ligament injuries on imaging or intraoperative arthroscopy (Sherman grading II and III), plan surgery within 45 days from injury; have basic literacy skills and unimpeded communication; have a smartphone and are able to use WeChat; and have been given informed consent and have signed to obtain an informed consent form, and the process must be in accordance with GCP requirements. Exclusion Criteria: 1) Combined with other knee injuries (posterior cruciate ligament injury, patellar dislocation, osteoarthritis, etc.); 2) Suffering from systemic immune diseases; 3) Presence of other diseases or inflammatory diseases of the knee, including osteoarthritis, cervical spondylosis, rheumatoid arthritis, fibromyalgia, and rheumatic polymyalgia, etc.; 4) Patients who have had localized hormone injection therapy within 3 months; 5) Those who have participated in a clinical trials or are undergoing other clinical trials; 6) Those with severe primary cardiovascular lesions, pulmonary diseases, endocrine and metabolic diseases or serious diseases affecting their survival, such as tumors or AIDS, which in the opinion of the investigator are not suitable for enrollment; 7) Those with severe hepatic lesions, renal lesions, and hematologic lesions, such as renal function exceeding the upper limit of normal values and hepatic function exceeding two times the upper limit of normal values; and 8) Those with viral hepatitis, infectious diseases, severe abnormalities of coagulation mechanism and other diseases that the investigator considers inappropriate for surgery; 9) Pregnant or lactating women, or those who plan to conceive during the follow-up period, with a positive result of urinary human chorionic gonadotropin test prior to sampling; menstruating women should wait until the end of their menstruation period to undergo the surgery; 10) Patients with severe neurological or psychiatric disorders; 11) Those with a suspected or confirmed alcoholic substance abuse history; 12) Vulnerable groups: mentally ill, critically ill patients, pregnant women, illiterate, minors, cognitively impaired.