Anterior Cruciate Ligament (ACL) Rupture

The purpose of this study is to determine what effects the withdrawal of excess knee joint fluid or the injection of a factor from the blood has on swelling after a sudden anterior cruciate ligament (ACL) rupture of the knee.

The goal of this clinical trial is to learn if using a phone app for exercises is as effective as working with a physical therapist before anterior cruciate ligament knee surgery. It will also check if exercising before surgery helps patients recover better compared to those who do not follow a specific exercise plan. The main questions it aims to answer are: * Does the phone app help patients improve their knee strength and movement as well as seeing a physical therapist? * Do patients who exercise before surgery have a better recovery after surgery than those who do not? Researchers will compare the phone app group to a physical therapist group and a group with no specific exercise plan to see which method works best. Participants will: * Follow an exercise plan for 4 weeks before their surgery (either using the app, with a therapist, or no specific plan). * Visit the clinic for check-ups before starting the exercises, right before the surgery, and 6 months after the surgery. * Complete simple tests and surveys to measure their knee health.