ACL surgery restores the physical structure of the knee, but one of the most overlooked parts of recovery happens in the nervous system. After injury and surgery, the brain’s connection to the muscles around the knee—especially the quadriceps—can become disrupted. This means the muscles may not fire correctly, even if the ligament itself has been repaired. As a result, patients may experience weakness, instability, or difficulty trusting the knee during movement. This isn’t just a strength issue