Understanding Posterolateral Corner (PLC) Knee Injuries: Symptoms and DiagnosisPosterolateral corner (PLC) knee injuries, often overlooked, can cause severe instability and long-term damage if not diagnosed early. This article highlights the importance of recognizing symptoms like lateral knee pain and swelling, explains the complex anatomy involved, and emphasizes advanced imaging—especially MRI—for accurate diagnosis. Timely specialist assessment enables appropriate treatment,…Posterolateral corner (PLC) knee injuries, often overlooked, can cause severe instability and long-term damage if not diagnosed early. This article highlights the importance of recognizing symptoms like lateral knee pain and swelling, explains the complex anatomy involved, and emphasizes advanced imaging—especially MRI—for accurate diagnosis. Timely specialist assessment enables appropriate treatment, ranging from physiotherapy for minor cases to surgical reconstruction for severe injuries. Early intervention prevents chronic instability and arthritis, supporting faster recovery and improved knee function, particularly after sports-related trauma or high-impact accidents.