20Shoulder Care
AC Joint Injuries
Biceps Tendon Injuries
Calcific Tendinitis
Clavicle Fractures
Frozen Shoulder
Labral and SLAP Tears
Rotator Cuff Injuries
Shoulder Dislocation/Instability
Subacromial Impingement/Busitis
A-C Joint Stabilization
Biceps Tenodesis
Clavicle Fracture Fixation
Pectoralis Major Repair
Rotator Cuff Repair
Shoulder Instability Surgery – Bankart Repair
Shoulder Instability Surgery – Latarjet Procedure
Subacromial Decompression and Acromioplasty
Superior Capsular Reconstruction
Total Shoulder Replacement
28Knee Care
ACL Tear
Cartilage Injury
Lateral Meniscus Tear
LCL Injury
MCL Injury
Medial Meniscus Tear
Patellar Instability
Patellofemoral Chondromalacia
Posterolateral Corner Injury
Trochlear Dysplasia
Anterior Cruciate Ligament (ACL) Reconstruction
Cartilage Restoration Surgery – Autologous Chondrocyte Implantation (ACI-Carticel)
Cartilage Restoration Surgery – Donor Graft
Collagen Meniscal Implant (CMI)
Lateral Collateral Ligament (LCL) Reconstruction
Medial Collateral Ligament (MCL) Reconstruction
Meniscus Repair
Meniscus Root Repair
Meniscal Transplant
Osteochondral Allograft Transfer
Osteochondral Autograft Transfer (OATS)
Partial Meniscectomy
Posterior Cruciate Ligament (PCL) Reconstruction
Posterolateral Corner (PLC) Surgery
Tibial Tubercle Osteotomy
17Hip Care
Cartilage Injury
Femoroacetabular Impingement (FAI)
Gluteal Tears
Hamstring Tears
Hip Instability
Labral Tears
Psoas Impingement (Internal Snapping Hip)
Trochanteric Bursitis
Gluteal Repair
Labral Debridement
Labral Repair
Labral Reconstruction
Trochanteric Bursa Debridement
Bone Marrow Aspirate Stem Cell Concentrate (BMC)
Platelet-Rich Plasma “PRP”


The medial collateral ligament (MCL) is one of four major ligaments in the knee. The MCL is on the inside of the knee and runs from end of the femur (thigh bone) to the top of the tibia (shin bone). The primary role of the MCL is knee stability in the frontal plane. The MCL is particularly important in providing stability to the knee when stress is placed on the outside of the knee, which places the MCL under tension. Too much stress can lead to an MCL sprain (tear). MCL injuries, like ACL injuries are graded I-III (III most severe).


  • Pain and swelling on the inside of the knee
  • Tenderness on the inside of the knee
  • A sense of instability in the knee with “buckling” episodes

Diagnosis And Treatment

Dr. Keller considers each patient’s symptoms, as well as a detailed physical examination, x-rays, and usually and MRI of the knee to make the diagnosis. In patients who sustain a low grade MCL injury (Grade I or II) in which the MCL is still functional, patients can be treated with a course of ice and rest, as well as a specific physical therapy program. Dr. Keller also treats patients with a hinged knee brace to help limit stress on the ligament during its healing phase.

Most patients with Grade III MCL strains (complete tear) are also treated non-operatively with a brace and physical therapy. Unlike the ACL, a completely torn MCL can heal on its own with appropriate tension. However, in some cases, the MCL does not heal and surgery may be required. Surgery generally involves repairing the MCL and/or including a graft to reconstruct the ligament.