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 lateral collateral ligament (LCL), also called the fibular collateral ligament (FCL) is one of the four major ligaments in the knee. The LCL runs from the end of the femur (thigh bone) down to the top of the fibula on the outside of the knee. Similar to the MCL, the LCL provides stability to the knee in the frontal plane.


  • Pain and swelling on the outside of the knee
  • Tenderness on outside of knee
  • A sense of instability in the knee with side to side motion

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. Patients who sustain a low grade LCL injury (Grade I or II) in which the ligament is still functional 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 LCL strains (complete tear) require surgery. Surgery involves reconstructing the ligament, usually with a hamstring allograft (donor soft tissue). The technique for LCL reconstruction has evolved over the years, and Dr. Keller typically employs a “fibular-based” technique. This technique has been validated in peer-reviewed journals and restores appropriate stability to an LCL-deficient knee.