The posterolateral region of the knee is an anatomically complex area that plays an important role in the stabilization of the knee relative to specific force vectors at low angles of knee flexion. A renewed interest in this region and advanced biomechanical studies have brought additional understanding of both the anatomy and the function of posterolateral structures in knee stabilization and kinematics. Through sectioning and loading studies, the posterolateral corner has been shown to play a role in the prevention of varus angulation, external rotation, and posterior translation. The potential for long-term disability from these injuries may be related to increased articular pressure and chondral degeneration. The failure of the reconstruction of cruciate ligaments may be due to unrecognized or untreated posterolateral corner injuries. Various methods of repair and reconstruction have been described and new research is yielding superior results from reconstruction of this region.
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Arthroscopic-Assisted Posterolateral Corner Reconstruction of the Knee: Novel Technique, Classification, Surgical Algorithm, and Midterm Results.
Arch Bone Jt Surg
January 2024
Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
Objectives: This study aimed to introduce a new arthroscopic method for reconstructing the popliteus tendon (PT). This minimally invasive technique is performed through the posterolateral corner (PLC) of the knee, which can reconstruct the posterolateral rotary instability (PLRI) of the knee.
Methods: Thirty-nine patients (8 females, 31 males) with PLC injury and normal knee alignment underwent arthroscopic PT reconstruction.
Introduction: Fibular- and tibiofibular-based reconstructions are the gold standard treatment for posterolateral corner (PLC) injuries of the knee. This is the first report describing a wholly tibial-based PLC reconstruction.
Case Report: A 50-year-old female presented with knee instability following proximal fibular resection for a benign tumor, associated with chronic anterior cruciate ligament (ACL) deficiency from a previous injury.
Posterolateral Corner Reconstruction: A Systematic Review and Meta-analysis of Biomechanical Studies.
Am J Sports Med
January 2025
MedStar Orthopaedic Institute, Union Memorial Hospital, Baltimore, Maryland, USA.
Background: Surgical reconstruction is the standard treatment for injuries to the posterolateral corner (PLC) of the knee and can be performed using either a fibular-based or combined tibiofibular-based technique. Although some comparative studies have been performed, there is no consensus regarding the reconstructive approach that confers optimal biomechanical properties of the PLC.
Purpose: To perform a systematic review and meta-analysis to evaluate the biomechanical properties of the knee after PLC reconstruction with fibular-based and tibiofibular-based techniques.
With an estimated incidence of 0.02% to 0.2%, multiligamentous knee injuries are rare, often devastating injuries that can occur with concomitant vascular or neurologic involvement.
View Article and Find Full Text PDFPosterolateral Knee Ligament Reconstruction Using the Arciero Technique Provides Greater Rotational Stability Than the Modified Larson Technique: A Biomechanical Study.
Am J Sports Med
January 2025
Department of Orthopedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria.
Background: It is still unknown if the double-femoral tunnel technique (Arciero [ARC]) provides better stability as compared with the single-femoral tunnel technique (modified Larson [LAR]) in posterolateral corner reconstruction. The ideal angle of fixation of the popliteofibular strand in ARC is also unknown.
Hypotheses: The ARC provides greater external rotation (ER) stability than the LAR (hypothesis 1); there is no difference in varus rotation (VR) stability between LAR and ARC (hypothesis 2); and femoral fixation of the popliteofibular strand at 60° during the ARC leads to greater ER stability than fixation at 30° or 90° of knee flexion (hypothesis 3).
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