Irreducible posterolateral knee dislocation: Diagnostic challenges and management (a surgical case report)

Introduction and importance: Posterolateral knee dislocations are rare, complex injuries predominantly resulting from high-energy trauma. They present significant diagnostic and therapeutic challenges, crucial for maintaining long-term knee function and stability. Case presentation: We report the case of Mr. Y.G., a 34-year-old male who suffered a left knee posterolateral dislocation due to a motorcycle accident. Clinical examination and imaging revealed a valgus deformity, swelling, ecchymosis, and a persistent medial joint line groove. The injury was classified based on NEYRET et al. criteria and 2008 SOFCOT standards. Surgical intervention involved repairing medial structures and applying a femoro-tibial external fixator. Radiographic and MRI findings confirmed a complete capsuloligamentous rupture and chondral injury of the lateral condyle. Clinical discussion: This case exemplifies the critical need for rapid radiological evaluation and tailored surgical interventions in managing posterolateral knee dislocations. It also demonstrates the effectiveness of using established classification systems for treatment planning and prognostic prediction. Conclusion: Timely and suitable management is essential for successfully treating posterolateral knee dislocations. Utilizing recognized classification systems plays a key role in guiding management decisions and improving patient outcomes, ensuring optimal recovery and knee functionality.