Anatomy And Function Of The Knee Essay

842 Words Nov 25th, 2016 4 Pages
Anatomy and Function of the Knee

The knee is the largest joint in the body; the joint is vital in supporting an individual when performing functional movements such as walking, running and jumping (Hamill, Knutzen and Derrick, 2014). Ref reports the knee joint moves in all three planes. Flexion and extension is seen in the sagittal plane, whereas internal and external rotation occurs in the transverse plane and adduction/abduction can be analysed from a frontal plane view. A ligamentous tissue capsule surrounds the joint, supporting the structure of the synovial membrane. The fluid produced from the synovial membrane lubricates the knee. The synovial fluid and the infrapatellar bursa – designed to cushion external forces acting on the joint - allow the joint to move smoothing during activity (Hamill et al., 2014). In addition to these tissues, the joint consist of four bones – the femur, patella, tibia, and fibula - four primary ligaments and two crescent-shaped cartilage menisci (Behnke, 2012). The ligaments work in opposing pairs; collateral and cruciate ligaments. The medial and lateral collateral ligaments are extra-articular stabilisers, which importantly resist Valgus and Varus movement, respectively. Additionally, the medical collateral ligament is designed to resist internal and external rotation occurring during movement. Conversely, the cruciate ligaments are cross-weaved in design to create a strong base of support in the intercondylar space of the tibiofemoral…

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