During knee arthroscopy, narrowness and tightness maybe encountered in the medial compartment that does not allow sufficient visualization or instrumentation. When this occurs, our team has found it helpful to perform a percutaneous clysis of the deep portion of the medial collateral ligament with a spinal needle. With the knee positioned in 10° to 20° of flexion and a valgus stress is applied....

In order to reconstruct the medial knee to restore the original biomechanical function of its ligamentous structures, a thorough understanding of its anatomic placement and relationship with surrounding structures is required. To restore the knee to normal kinematics, the diagnosis and surgical approach have to be aligned, to successfully reconstruct the area of injury. Three important ligament...

INTRODUCTION The Segond injury corresponds to a marginal avulsion fracture of lateral tibial plateau, resultant from flexion traumas, stress in varus and internal rotation. The structure responsible for avulsion is the lateral collateral ligament, and anterior cruciate ligament and lateral meniscal injuries are also frequently present(1-4). Hall and Hochman(5) provided the first report of an in...

The medial collateral ligament (MCL) is the most commonly injured knee ligament.1-3 The mechanism of injury is typically a contact valgus load on the lateral side of the knee with the foot planted; however, noncontact external rotation valgus injuries are also common. Medial collateral ligament failure can occur alone or in combination with cruciate and meniscal injury. Fetto and Marshall4 foun...

BACKGROUND Increased stability of posterolateral corner knee injuries has been observed clinically after proximal tibial medial opening wedge osteotomies. HYPOTHESIS Static varus and external rotatory stability will be significantly improved in a knee with a grade 3 posterolateral knee injury after a proximal tibial medial opening wedge osteotomy. STUDY DESIGN Controlled laboratory study. ...

Injuries to the medial side of the knee are not always isolated injuries of the superficial medial collateral ligament. Medial-sided injuries can also involve the deep medial collateral ligament, the posteromedial corner, or the medial meniscus. Magnetic resonance imaging is a useful adjunct to the physical examination; however, the extent of medial-sided injuries is frequently underappreciated...

BACKGROUND The amount of medial compartment opening for medial knee injuries determined by valgus stress radiography has not been well documented. The purpose of this study was to develop clinical guidelines for diagnosing medial knee injuries using valgus stress radiography. HYPOTHESIS Measurements of medial compartment gapping can accurately differentiate between normal and injured medial s...