Submission of the KOOS ACL questionnaires in Italian for the purpose of validation and cultural adaptation of the KOOS-ACL scale for the Italian population.

Inclusion Criteria:

• Patient age 18 years or older
• Patients who are native Italian speakers
• Patients undergoing anterior cruciate ligament reconstruction of the knee
• Patients who have understood and signed the informed consent to participate in the study.
• Patients who are able to understand the study conditions and participate for the entire duration

Exclusion Criteria:

• Patients unable to understand the text in Italian
• Patients undergoing knee replacement surgery, corrective osteotomies, or osteosynthesis of knee fractures.
• Patients who are drug addicts, alcoholics, suffer from psychiatric disorders, or have any clinical conditions that could compromise the success of the questionnaire.
• Patients with orthopedic conditions of other origins

Patients with a diagnosis of anterior cruciate ligament injury, undergoing or being considered for ACL reconstruction surgery.