Posterolateral instability is a serious knee injury that is common with posterior cruciate ligament tears, and less common with anterior cruciate ligament tears, and rarely occurs as an isolated injury. There are varying degrees of posterolateral instability with respect to pathologic external tibial rotation, and varus laxity. Treatment of posterolateral instability must address all components of the posterolateral instability complex, which include the popliteus tendon, popliteofibular ligament, lateral collateral ligament, and the lateral and posterolateral capsule, and also other structural knee injuries that are present. The successful treatment of posterior cruciate ligament and anterior cruciate ligament injuries depends upon recognition and treatment of the associated posterolateral corner injuries.
This issue of Sports Medicine and Arthroscopy Review is dedicated to the evaluation and treatment of posterolateral instability of the knee. It has been an honor to work with this distinguished group of contributing authors, who are experts in the evaluation and treatment of posterolateral instability of the knee. Topics presented in this issue include anatomy and biomechanics, physical examination, diagnostic imaging, nonsurgical treatment, free graft, and capsular procedures for surgical reconstruction of posterolateral instability, and complications associated with the treatment of collateral ligament injuries.
The purpose of this issue of Sports Medicine and Arthroscopy Review is to provide experienced knee surgeons, general orthopedic surgeons, fellows, residents, medical students, and other health-care professionals with an interest in posterolateral knee injuries, an overview for the evaluation, nonsurgical, and surgical management of the complex injuries.