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Lateral cruciate ligament injury and posterior lateral instability

Lateral cruciate ligament injury and posterior lateral instability The LCL is the primary restraint to varus stress of the knee (when the distal lower leg is pressed inward). It is most commonly injured in combination with one of the cruciate ligaments. The mechanism of injury is gait for increased external rotation of the foot, painful […]

Posterior cruciate ligament injuries

PCL tears of the knee are not very common; they constitute only 5-10% of all major knee ligament tears.

Anatomy The PCL has an average width of 0.5 in (13 mm) and length of 1.5 in (38 mm). It is fan-shaped, being narrowest in the midportion and fanning out superiorly and, to a lesser extent, […]

Knee Pain

Basics Description Knee pain has many causes, including pathologic processes in the knee and disorders in distant locations with referral to the knee area. Diffuse or located in a specific region A characteristic history and physical examination frequently narrow the diagnosis. Classification: Traumatic Acquired Risk Factors Athletic activity Obesity Sedentary lifestyle Etiology Traumatic injury […]

Knee Examination in the Child

Basics Description It is important, during a knee examination, to keep in mind the child’s age and to understand the age-specific pediatric knee disorders. Congenital hyperextension or dislocation of the knee: Varies from simple hyperextension to anterior dislocation of the tibia on the femur Hyperextended knee presents at birth. A hyperextensible knee resolves spontaneously, […]

Knee Anatomy and Examination

Basics Description Anatomy of the knee consists of compartments, bones, menisci, ligaments, muscles, and nerves. 3 compartments: Medial, lateral, and patellofemoral Bones: Patella: Serves as fulcrum to aid knee extension Medial and lateral menisci: Fibrocartilaginous structures in medial and lateral femorotibial compartments Aid in joint lubrication and nutrition and in load distribution across articular […]