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Knee injury – Anterior Cruciate Ligament (ACL) tear

What is Anterior Cruciate Ligament tear?

The anterior cruciate ligament, or ACL, is one of four major knee ligaments. The ACL is critical to knee stability, and people who injure their ACL often complain of symptoms of their knee giving-out from under them. Therefore, many patients who sustain an ACL tear opt to have surgical […]

Posterior Cruciate Ligament Injury

Basics Description Injury to the OSD, the primary stabilizer to posterior translation of the tibia on the femur at the knee Classification (see Posterior drawer test under Physical Exam): Grade 1: Tibial plateau is anterior to the femoral condyles. Grade 2: Tibial plateau is level with the femoral condyles. Grade 3: Tibial plateau is […]

Popliteal Cyst in the Adult

Basics Description Popliteal cyst in an adult is a distended cyst in the posterior fossa of the knee that often is connected directly to the joint space. Synonym: Baker cyst Epidemiology Bimodal distribution: 1 subset in children, 1 in adults >55 years old: In adults, cysts usually are the result of intra-articular abnormalities. In […]

Meniscus Tear

Basics Description A meniscus tear is an acute or degenerative injury to the meniscal fibrocartilage of the knee. Classification: Acute tear: Longitudinal (50-90%) Radial (6%) Flap (4%) Degenerative tear: Mostly horizontal cleavage or complex tears Epidemiology Acute tears occur mainly in adolescents and young adults, and degenerative tears predominate in the 40-60-year-old population. Degenerative […]

Knee Dislocation

Basics Description Dislocation of the knee is an orthopaedic emergency. The most common causes are motor vehicle accidents, followed by sports and falls from heights. Classification: Anterior Posterior Medial Lateral Rotary: Subclassified as anteromedial, anterolateral, posteromedial, posterolateral General Prevention Seat belts and airbags are the best methods of prevention. Epidemiology Incidence Rare Associated Conditions […]