The anterior cruciate ligament (ACL) is important ligaments of the knee. The Aim of the study is to assess
knowledge and practice of patients undergoing arthroscopy for anterior cruciate ligament injury , to evaluate the
effect of applying nursing teaching program on knowledge and practice of patients undergoing arthroscopy for
anterior cruciate ligament injury. Quasi experimental research design was utilized in this study . First tool interview
questionnaire sehedule consists of biosocial characteristics of patients , second tool to assess patients knowledge
and practice. Results concluded that high statistical significant difference between the study and the control group
regarding their knowledge and practice with P value (0.001). Conclusion : it can be concluded that, patients`
knowledge and practice regarding ACL surgery for orthopaedic patient of Assiut University Hospitals are improved
after teaching program . Recommendation : providing written guidelines for patients was much more effective than
those patients in the control group who received resident's oral instructions