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Posterolateral Corner Injury - Tyler Welch, MD
York, ME (207) 363 3490 | Portsmouth, NH (603) 431 1121

20Hip Care
10Hip-Conditions and Injuries
Cartilage Injury
Femoroacetabular Impingement (FAI)
Gluteal Tears
Hamstring Tears
Hip Instability
Deep Gluteal Space Syndrome
Labral Tears
Psoas Impingement (Internal Snapping Hip)
PVNS
Trochanteric Bursitis
10Hip-Treatment and Surgeries
Acetabuloplasty
Chondroplasty
Femoroplasty
Gluteal Repair
Labral Debridement
Labral Reconstruction
Labral Repair
Nanofracture
Psoas Release
Trochanteric Bursa Debridement
33Knee Care
13Knee Conditions and Injuries
ACL Tear
Cartilage Injury
Discoid Meniscus
Lateral Meniscus Tear
LCL Injury
MCL Injury
Medial Meniscus Tear
Osteoarthritis
Osteochondritis Dessicans
Patellar Instability
Patellofemoral Chondromalacia
Posterolateral Corner Injury
Trochlear Dysplasia
20Knee Treatment and Surgeries
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
Medial Patellofemoral Ligament (MPFL) Reconstruction
Nanofracture
Osteochondral Allograft Transfer
Osteochondral Autograft Transfer (OATS)
Partial Knee Replacement (MAKO)
Partial Meniscectomy
Posterior Cruciate Ligament (PCL) Reconstruction
Posterolateral Corner (PLC) Surgery
Tibial Tubercle Osteotomy
Total Knee Replacement (MAKO)
Trochleoplasty
20Shoulder Care
10Shoulder-Conditions and Injuries
AC Joint Injuries
Arthritis
Biceps Tendon Injuries
Calcific Tendinitis
Clavicle Fractures
Frozen Shoulder
Labral and SLAP Tears
Rotator Cuff Injuries
Shoulder Dislocation/Instability
Subacromial Impingement/Busitis
10Shoulder-Treatment and Surgeries
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

POSTEROLATERAL CORNER (PLC) INJURY

The Posterolateral Corner (PLC) is a group of structures on the outside of the knee that provides the knee with rotational stability. The main anatomic structures of the posterolateral aspect of the knee are the lateral collateral ligament (LCL), the popliteus tendon, and the popliteofibular ligament. The common peroneal nerve runs adjacent to the PLC and can also be injured when posterolateral corner injuries occur. Damage to this area of the knee often occurs due to a sports injury or high energy injury, such as a car accident. Other structures in the knee, such as the posterior cruciate ligament, may also be injured in the setting of a PLC injury. Such an injury is called a “multi-ligament” knee injury.

Symptoms

  • Pain on the outside of the knee
  • Instability with turning and pivoting
  • Numbness along the outside of the knee extending toward the foot

Diagnosis And Treatment

Dr. Welch considers each patient’s symptoms, as well as a detailed physical examination, x-rays, and usually an MRI of the knee to make the diagnosis. There are multiple clinical examination maneuvers that can help detect a PLC injury. The most common exam maneuvers include the Varus Stress Test, Dial Test, and Posterolateral Drawer Test.

Grade I (small partial tear) and Grade II (more severe partial tear) injuries can be treated with non-operative management, including a dedicated physical therapy program and bracing. Grade III (complete tear) injuries usually require surgery. Surgery involves reconstructing the ligaments, usually with a hamstring allograft (donor graft). There are multiple techniques for PLC reconstruction and Dr. Welch typically employs a “fibular-based” technique, similar to the technique used for LCL reconstruction. Following surgery, patients start a dedicated rehabilitation program.


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