All examinees will undergo ACL reconstruction using BTB graft. MRI scans of operated knee will be conducted at two time points: 4 weeks and 1 year after ACL reconstruction surgery.

All examinees will undergo ACL reconstruction using BTB graft. MRI scans of operated knee will be conducted at two time points: 4 weeks and 1 year after ACL reconstruction surgery.

MRI of operated knee

The healing progress will be assessed through MRI scans conducted at two time points: 4 weeks and 1 year after the surgical intervention. The measurement of bone-tendinous defect healing will be expressed both in cubic millimeters and as a percentage. The cubic millimeter measurement will quantify the size of the defect observed on the MRI scans. This measurement provides a precise assessment of the volume of the defect, allowing for accurate tracking of the healing process over time. In addition, the healing progress will also be expressed as a percentage, comparing the size of the defect at each time point relative to the initial defect size observed at the 4-week scan. This percentage calculation will offer a relative measure of the extent to which the bone-tendinous defect has healed or progressed over the course of the study.

The International Knee Documentation Committee (IKDC) form is a validated patient-reported outcome measure used to assess knee function and symptoms. It is a self-administered questionnaire that helps evaluate the subjective knee-related outcomes and overall knee function of individuals. The IKDC form covers various aspects, including symptoms, daily activities, sports and recreational activities, and knee-related quality of life. It consists of items that assess pain, stability, swelling, locking, giving way, range of motion, and the ability to perform specific tasks. Possible IKDC form score range from 0 to 100 and scores are divided into categories and interpreted based on cutoff values. Scores above 90 or 95 may be considered excellent or near-normal, scores between 80 and 89 may be considered good or satisfactory, scores between 70 and 79 may be considered fair or moderate, and scores below 70 may be considered poor or unsatisfactory.

The Lysholm Knee Scoring Scale, often simply referred to as the Lysholm Score, is a patient-reported outcome measure used to evaluate the symptoms and functional limitations in individuals with knee injuries, especially those related to anterior cruciate ligament (ACL) damage. The Lysholm Score is commonly utilized in clinical practice and research to monitor the outcomes of knee surgeries or interventions. Categories Evaluated by Lysholm Knee Scoring Scale are: limping, using support, pain, locking, swelling, stair climbing, squatting and instability. The total score can range from 0 (severe symptoms and limitations) to 100 (no symptoms or limitations), with scores interpreted as Excellent, Good, Fair, or Poor based on the range they fall into.