MCL Reconstruction
MCL reconstruction is a surgical procedure to restore the medial collateral ligament — the ligament on the inner side of the knee that resists valgus (outward) stress. While most isolated MCL tears heal without surgery, severe or chronic MCL injuries combined with other ligament damage (ACL, PCL, or posterolateral corner) often require surgical reconstruction using a tissue graft to replace or reinforce the damaged ligament.
Find a SurgeonWhat is MCL Reconstruction?
MCL reconstruction is a surgical procedure to restore the medial collateral ligament — the ligament on the inner side of the knee that resists valgus (outward) stress. While most isolated MCL tears heal without surgery, severe or chronic MCL injuries combined with other ligament damage (ACL, PCL, or posterolateral corner) often require surgical reconstruction using a tissue graft to replace or reinforce the damaged ligament.
Typical cost: $15,000 - $30,000 (before insurance) for isolated reconstruction; higher when combined with ACL, PCL, or other ligament procedures. Most insurance plans cover the procedure when medically necessary.
Last reviewed May 8, 2026 by AdvOrtho Editorial Team
Informational, not medical advice
Who Needs MCL Reconstruction?
MCL reconstruction is indicated for Grade III MCL tears that have failed conservative treatment, combined knee ligament injuries involving the MCL alongside ACL or PCL tears, chronic MCL insufficiency causing persistent instability with activity, and revision cases where a prior repair has failed. Isolated Grade I and II tears almost always heal with bracing and physical therapy alone.
What to Expect
Recovery Timeline
Knee brace locked in extension. Touch-down weight bearing only. Ice and elevation to control swelling.
Progressive weight bearing as tolerated. Brace range-of-motion gradually unlocked. Physical therapy begins for quad activation and gentle flexion.
Full weight bearing without crutches. Strengthening exercises for quadriceps, hamstrings, and hip abductors. Brace may be discontinued.
Return to light jogging and sport-specific training. Agility and lateral movement exercises begin.
Gradual return to competitive sport. Functional testing (strength symmetry, hop tests) required before clearance.
Full recovery. Graft ligamentization complete and knee stability maximized.
Risks & Complications
- Graft failure or re-tear
- Knee stiffness and loss of flexion or extension
- Saphenous nerve injury causing numbness on the inner knee or calf
- Infection (less than 1%)
- Blood clots (DVT)
- Persistent instability if concurrent injuries are not addressed
Frequently Asked Questions
Does the MCL heal without surgery?
Most MCL tears — including many Grade III (complete) tears — heal without surgery with 4-8 weeks of bracing and physical therapy. Surgery is reserved for Grade III injuries that fail conservative care, or for combined ligament injuries (particularly alongside an ACL or PCL tear) where the MCL is unlikely to heal adequately on its own to allow a stable knee reconstruction.
What is the difference between MCL repair and MCL reconstruction?
MCL repair reconnects the torn ends of the native ligament and is only possible when the tear is acute and tissue quality is good, particularly in avulsion-type tears near the bone. MCL reconstruction replaces the damaged ligament with a tissue graft and is used for chronic injuries, poor tissue quality, or combined ligament injuries. Your surgeon will determine the best approach based on your specific tear pattern and timing.
What type of doctor performs MCL reconstruction?
Orthopedic surgeons specializing in sports medicine or complex knee ligament reconstruction perform MCL reconstruction. Because MCL injuries frequently occur alongside ACL, PCL, or posterolateral corner injuries, a surgeon experienced in multi-ligament knee reconstruction is important for optimal outcomes.
Find a surgeon for MCL Reconstruction
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Search surgeonsEstimated Cost
$15,000 - $30,000 (before insurance) for isolated reconstruction; higher when combined with ACL, PCL, or other ligament procedures. Most insurance plans cover the procedure when medically necessary.
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This information is for educational purposes only. Costs are estimates and vary by location, surgeon, and insurance. Always consult a qualified healthcare provider.