Restore Stability. Protect the Outer Knee.
What Are the LCL and PLC?
The Lateral Collateral Ligament (LCL) and the Posterolateral Corner (PLC) are critical stabilizers of the outer side of the knee.
- The LCL prevents the knee from buckling outward (varus instability).
- The PLC is a complex group of structures that prevent external rotation, hyperextension, and posterior instability.
Injuries to these structures can lead to significant instability, especially when walking on uneven surfaces, changing direction, or during athletic activity.
Who Needs LCL or PLC Reconstruction?
Surgery is typically recommended if:
- You have a complete LCL tear or complex PLC injury confirmed by MRI
- Your knee feels unstable when turning, cutting, or walking on uneven ground
- The injury is combined with ACL or PCL damage (multi-ligament injury)
- Conservative treatment (bracing or physiotherapy) hasn’t restored function
- You are active and wish to return to sports or high-demand physical work
These injuries are less common but more complex, requiring specialist surgical expertise.
About the Procedure
LCL and PLC reconstructions are usually performed arthroscopically or through a mini-open approach, depending on the severity and chronicity of the injury. The procedure typically includes:
- Thorough evaluation of all damaged structures
- Graft reconstruction using autografts or allografts
- Precise tunnel placement and graft fixation to recreate natural ligament positioning
- Repair of additional components such as the popliteus tendon or lateral capsule
- Joint stability testing before closure
The surgery can take 2 to 3 hours and is often done alongside ACL or PCL reconstruction in combined injuries.
Recovery Timeline
Recovery after LCL/PLC surgery requires structured rehab and careful protection of the joint:
- Hospital stay: 1 to 2 nights
- Use of a hinged knee brace: 6 to 8 weeks
- Weight-bearing with crutches: Typically allowed after 2 to 3 weeks
- Physiotherapy begins early with gradual motion and strength training
- Return to light activity: 3 to 4 months
- Return to sports or heavy work: 9 to 12 months, depending on graft healing and strength
Monitoring is essential to avoid overloading the repaired structures early in recovery.
Learn More or Get a Free Case Review
If you’ve suffered a complex knee injury or persistent outer knee instability, complete our consultation form. Our specialist team will review your MRI and provide a clear treatment recommendation and travel plan.
