MCL Repair and Reconstruction

If your knee suddenly buckled inward during a sports play or a fall, and now you’re dealing with pain, swelling, or instability on the inner side of the joint, you may have injured your medial collateral ligament, or MCL. This strong band of tissue connects the thigh bone (femur) to the shin bone (tibia) and plays a key role in stabilizing the knee against sideways forces.

MCL injuries are common in contact sports and accidents involving twisting or impact to the outer knee. While many MCL tears heal on their own with rest and rehab, more severe cases may require MCL surgery.

Signs You Might Have an MCL Tear

Not every sore knee is an MCL tear, but there are certain patterns of injury and symptoms to watch for:

• Sudden pain on the inner side of the knee after a collision, awkward twist, or direct blow.
• Swelling and stiffness develop within hours of injury.
• Tenderness along the inner knee when pressing on the ligament.
• Knee “giving way” or instability, especially when changing direction or walking on uneven ground.
• Difficulty bending or straightening the knee fully.

In mild sprains, symptoms may improve with rest, but a complete MCL rupture often leaves the knee unstable. If you recognize these signs, an orthopedic evaluation is important.

How Is an MCL Tear Diagnosed?

At Southern California Orthopedic Institute (SCOI), diagnosis begins with a physical exam. Your doctor will check for looseness in the joint by gently moving the knee. Imaging such as MRI is often ordered to confirm the extent of the injury and to check for related damage, since the MCL can tear along with the ACL, meniscus, or other knee structures.

Diagnosis helps separate mild sprains from injuries that may need surgery. Our knee specialists will grade your injury as follows:

• Grade 1 (mild sprain): Slight stretch, usually heals in weeks.
• Grade 2 (partial tear): More swelling and instability, treated with bracing and therapy.
• Grade 3 (complete tear): The ligament is fully torn and often requires MCL repair surgery, especially in active individuals.

What Is MCL Surgery?

MCL repair surgery is designed to restore knee stability when natural healing is not enough. Two main surgical approaches are used:

• MCL tear surgery: Torn ends are stitched back together, usually if the ligament has pulled away from the bone.
• MCL reconstruction: A tendon graft (either from the patient or a donor) is used to replace the ligament if the tissue is too damaged to repair.

MCL knee surgery is performed under anesthesia on an outpatient basis. The surgeon makes a small incision near the inside of the knee, repairs or reconstructs the ligament, and secures it in place. The procedure typically lasts one to two hours. Most patients return home the same day.

When Is MCL Repair Surgery Recommended?

Most people with MCL injuries heal with nonsurgical treatments such as rest, bracing, and physical therapy. Surgery is considered when:

• The ligament is completely torn (MCL rupture surgery).
• The knee remains unstable despite months of conservative care.
• Multiple ligaments are injured at once.
• Athletes or highly active patients need strong, reliable stability to return to sports or demanding activities.

If you are unsure whether you need surgery, SCOI’s sports medicine doctors can explain your treatment options and help you decide based on the grade of your injury, your goals, and lifestyle.

What To Expect Before, During, and After Surgery

Before Surgery

Patients often meet with their surgeon and physical therapist to plan ahead for their care. Preoperative preparation may include:

• Imaging studies such as MRI or X-ray.
• Discussion of graft options if reconstruction is needed.
• Guidance on crutch use, bracing, and what to expect at home after surgery.

During Surgery

The outpatient procedure is performed under anesthesia. Small incisions are made on the inner knee. If the ligament can be repaired, your surgeon will use stitches and anchors to reattach it. If reconstruction is needed, a graft is secured to recreate the ligament.

After Surgery

Patients go home the same day in most cases. The knee is placed in a protective brace. Crutches are used for the first few weeks. Pain, swelling, and stiffness are common but improve with rest, ice, and early rehabilitation.

Realistic Recovery and Rehabilitation Timeline

Recovery after MCL surgery is a structured process to walk independently and return to full activity. Timelines vary based on several factors, including the type of surgery, injury severity, any additional damage, your overall health, and your surgeon’s specific recommendations. SCOI’s rehabilitation program aims to help patients regain stability, strength, and function step-by-step:

• Weeks 1–2: Use of crutches and a hinged knee brace for getting around. Focus on swelling control and gentle range-of-motion exercises.
• Weeks 3–6: Physical therapy sessions expand motion and begin light strengthening. Many patients start walking with support within 2–4 weeks of the surgery and independently by 6–8 weeks.
• Months 3–4: Continued strengthening, balance training, and more functional activities. Most daily movements are comfortable at this stage.
• Months 6–9: Athletes begin sport-specific drills. Return to running and pivoting activities occurs gradually and varies from each patient. Clearance for full return to sports is usually given between 8–9 months, depending on progress.

MCL Surgery at SCOI

SCOI is a national leader in sports medicine and knee surgery, offering comprehensive care for MCL injuries, from initial consultation and advanced on-site diagnostics to surgery and in-house rehabilitation. Our surgeons perform a high volume of MCL repairs and reconstructions, bringing specialized expertise and the latest techniques to each case. What truly sets SCOI apart is our fully integrated approach: surgeons, sports medicine physicians, and physical therapists work side by side to guide each patient through every phase of treatment and recovery.

Whether you are an athlete aiming to return to competition or an individual seeking to regain steady movement in daily life, SCOI provides a complete care plan tailored to your needs. We will explain your diagnosis, review treatment options, and guide you through recovery.