1. medical check up

   • active and passive Range Of Motion (ROM)
   • anterior drawer test
   • knee's alignment
   • modified cincinnati rating system questionnaire (mCRSQ)
   • tegner lysholm knee scoring scale (TLKS)
   • Tegner Activity Level Score (TALS)

2. self-reported psychological questionnaires

   • Tampa Scale of Kinesiophobia (TSK)
   • ACL Return to Sport after Injury (ACL-RSI) score

3. biomechanical tests

   • Stability test: to balance on one/two legs on a free to move disc for 30s
   • Jump test: i) a maximize jump with both legs; ii) a maximize jump with only one leg; three consecutive jumps; iv) jump coordination path where the patient had to perform a forward-backward-forward jump and a sideway jump on one leg
   • Coordination test: a square hurdle was used for the quick test, where the patient had to step in and out with both feet for a total of 15-rep as quickly as possible
   • fatigue test: to rise and sit from a chair for 30-rep as quickly and safely as possible

Tampa Scale of Kinesiophobia is a 17 item questionnaire used to assess the subjective rating of kinesiophobia or fear of movement. A score of 17 is the lowest possible score, and indicates no kinesiophobia or negligible. A score of 68 is the highest possible score and indicates extreme fear of pain with movement.

ACL Return to Sport after Injury measures the patient's understanding of his knee. It comprises 12 questions with a score of 1 to 10 for each. It is considered that for a normal population without knee condition, the score is between 80 and 90%.

modified Cincinnati Rating System Questionnaire has been designed to give your therapist information as to how your knee pain has affected your ability to manage in everyday life. It consists of 12 questions, 8 of which are included in the summary score. The total score is calculated as the sum of all questions responses, with 100 representing the best/excellent knee function, and 0 representing the worst/poor knee function.

Clinical assessment consist of three tests carried on during medical check-up: i) active and passive Range Of Motion (ROM); ii) anterior drawer test; iii) knee's alignment. All these measurements will be transformed in categorical variables in order to perform chi square test.

Clinical assessment consist of three tests carried on during medical check-up: i) active and passive Range Of Motion (ROM); ii) anterior drawer test; iii) knee's alignment. All these measurements will be transformed in categorical variables.

During the stability test, the patient stands with one and two legs respectively on a free to move balance disc for 30 seconds. Subjects were instructed to stand in the centre with their arms at their sides. Level of stability is defined as an index ranking from 1 (low stability) to 5 (high stability).

Eta square between categorical variables from clinical assessment and the measure outcomes of biomechanical assessment will be performed.

The CLIMB battery is the combination of biomechanical, clinical and psychological criteria which could allow to return to sport with the lowest possible risk of reinjury. After performing a correlation matrix and calculating collinearity using linear regression, we will calculate odds ratio as measure of association for presence-absence of meniscal lesion in the observed cohort.