An MCL Medial Collateral Ligament) tear of the elbow is an injury to the ligament on the inner side of the elbow, which provides stability during arm movements, especially those involving throwing or lifting. This tear often occurs in athletes, particularly pitchers or others who perform repetitive overhead motions. Symptoms typically include pain on the inside of the elbow, swelling, weakness, and a feeling of instability. Treatment ranges from rest and physical therapy for partial tears to surgical repair or reconstruction in cases of severe tears, especially in athletes looking to return to high levels of performance.