The reproducibility and repeatability of varus stress radiographs in the assessment of isolated fibular collateral ligament and grade-III posterolateral knee injuries

We read with interest the recent paper “The Reproducibility and Repeatability of Varus Stress Radiographs in the Assessment of Isolated Fibular Collateral Ligament and Grade-III Posterolateral Knee Injuries. An in Vitro Biomechanical Study” (2008;90:2069-76), by LaPrade et al., which aimed to address the lack of quantitative data on the diagnosis of posterolateral knee ligament injuries. We commend the authors for attempting to provide a more objective clinical assessment of these injuries. We question, however, whether the conclusions drawn from the study are supported by the evidence presented.