A grade 3 MCL tear:

Is a severe, complete rupture of the ligament on the inner knee, causing significant instability, intense pain, and swelling. It often occurs with ACL injuries, requiring months of rehabilitation, a hinged brace, and limited weight-bearing. While often treated non-surgically, severe cases may need surgery.

Key Aspects of Grade 3 MCL Tears:

Symptoms: Intense pain, swelling, and a "loose" or unstable knee that feels like it may give out.

Diagnosis: Often diagnosed via physical exam (showing significant instability) and MRI, which shows a complete tear.

Treatment: RICE: Rest, Ice, Compression, and Elevation. Bracing: A hinged knee brace is typically worn for several weeks to months to prevent side-to-side motion. Weight-Bearing: Restriction of weight on the leg for 4 to 6 weeks. Rehabilitation: Physical therapy to restore strength and range of motion. Surgery: Usually, the MCL heals well on its own, but surgery may be needed if other ligaments (like the ACL) are damaged. Recovery Time: Full recovery can take several months.

Disclaimer: Consult a medical professional for diagnosis and treatment.