Application of the magnetic field in the resorption of postoperative edema after reconstruction of the anterior cruciate ligament

INTERVENTION: The first stage of the research will be the qualification of the patient for the ACL reconstruction performed by the orthopedic surgeon. The second stage of postoperative therapy will be dividing patients into two groups and randomly assigning each of them on the first day after the reconstruction a device emitting a magnetic field (the assignment of the device will be based on a simple randomization using a coin toss ‐ the obverse ‐ the patient received the A device, the reverse ‐ the patient received the apparatus B). Neither the patient nor the investigators will know which device emits a magnetic field. For the next 11 days, each patient will have a magnetic field performed by the physiotherapist. The device is a knee brace that is strapped onto the participant. The magnetotherapy treatment will be performed daily at the same time by the same therapist. Patients will use the device for 30 minutes, and the magnetic field parameters in both devices will be the same ‐ 3mT and 100Hz. The third stage of the research will be a functional examination including measurement of the lower limb circumferences (measurement by the knee and thigh (10 cm from the patellar base) and range of knee joint motion and assessment of knee joint function using the Lysholm scale. The first examinationof the lower limb circumferences will be made before the start of therapy with a magnetic field, and then every day for a period of 11 days, each time after the treatment with a magnetic field. The range of motion of the knee and the assessment of joint function will be evaluated twice ‐ before and after the end of therapy with a magnetic field. Any changes in the progress of the intervention will be made by direct supervision of the physiotherapist. During the magnetic field application, patients of both groups will not perform any exercises of the operated joint, they will move on crutches and apply cooling the joint with ice cubes (2x daily for 15 min). Intervention a CONDITION: ACL reconstruction; ; ACL reconstruction Injuries and Accidents ‐ Other injuries and accidents Musculoskeletal ‐ Other muscular and skeletal disorders PRIMARY OUTCOME: Measurement of thigh circumference using a centimeter tape.[On the day of therapy with the magnetic field and for the next 11 days.] Measurement of knee circumference using a centimeter tape.[On the day of therapy with the magnetic field and for the next 11 days.] Measurement of the range of motion of the knee using a goniometer.[Measurement performed on the first and last day of therapy with a magnetic field.] SECONDARY OUTCOME: Assessment of the knee function using the Lysholm scale.[Assessment of knee joint function performed on the first and last day of therapy with a magnetic field.] INCLUSION CRITERIA: 1. Reconstruction technique determined by the attending physician ‐ reconstruction of the cruciate ligament using the autogenous method ‐ ST tendon graft. 2. No other injuries or illnesses that may affect the outcome of the tests (e.g. meniscus injury, degenerative changes in the joints of the leg). 3. A voluntary consent of the patient to participate in the study.