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Updated: Jul 8, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
Published on: October 20, 2023
The posterolateral corner of the knee
Emily N Vinson1, Nancy M Major, Clyde A Helms
1Department of Radiology, Duke University Medical Center, Erwin Rd., Box 3808, Durham, NC 27710, USA. vinso003@mc.duke.edu
Posterolateral corner knee injuries can lead to significant disability. Understanding the anatomy and MRI findings of the posterolateral corner is crucial for accurate diagnosis and improved patient outcomes.
Area of Science:
- Orthopedic Surgery
- Radiology
- Sports Medicine
Background:
- The posterolateral corner (PLC) of the knee is a complex anatomical region.
- Injuries to the PLC can result in significant knee instability and long-term disability.
- Accurate diagnosis of PLC injuries is often challenging.
Purpose of the Study:
- To review the clinical significance of injuries to the posterolateral corner of the knee.
- To describe the characteristic Magnetic Resonance Imaging (MRI) appearances of these injuries.
Main Methods:
- Review of relevant medical literature.
- Analysis of MRI findings in patients with confirmed PLC injuries.
- Correlation of imaging findings with clinical presentation and outcomes.
Main Results:
- Specific MRI features indicative of PLC injury were identified.
- The clinical importance of recognizing these injuries was highlighted.
- The association between PLC injuries and outcomes such as instability and cartilage degeneration was discussed.
Conclusions:
- Injuries to the posterolateral corner structures can lead to significant knee disability, including instability, cartilage degeneration, and cruciate graft failure.
- Familiarity with the anatomy and MRI appearances of the posterolateral corner is essential for improving diagnostic accuracy.
- Enhanced understanding of these injuries can lead to better patient management and outcomes.
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