The goal of this observational study is to learn about patients who will undergo anterior cruciate ligament reconstruction. The main questions it aims to answer are:

• What is the minimal clinically important difference value of the Lysholm Knee Score?
• What is the substantial clinical benefit value of the Lysholm Knee Score?
• What are the risk factors that prevent patients who have undergone anterior cruciate ligament reconstruction from reaching the minimal clinically important difference value?
• What are the risk factors that prevent patients who have undergone anterior cruciate ligament reconstruction from reaching the substantial clinical benefit value?

Inclusion Criteria:

• to be over 18 years old
• to undergo surgery for a ruptured anterior cruciate ligament

Exclusion Criteria:

• to have metabolic or autoimmune diseases
• to undergo revision anterior cruciate ligament surgery or anterior cruciate ligament repair
• to have cognitive issues that will hinder the completion of the study forms
• to lack sufficient proficiency in Turkish

The study will be conducted with people undergoing anterior cruciate ligament reconstruction at Gazi University Hospital.