Understanding your hip: Anatomy, function, and mobility
The knee is the largest joint in the human body and one of the most complex. It acts as a fundamental hinge that allows us to walk, run, and sit, connecting the femur (thigh bone) to the tibia (shin bone). Like the hip, it is designed to bear the body's weight during movement and at rest. The joint surfaces are covered by articular cartilage and lubricated by synovial fluid, which ensures smooth movement and minimizes friction to prevent wear.
For the knee to remain stable, it relies on several crucial structures. The menisci (medial and lateral) act as shock absorbers between the bones, distributing weight and protecting the cartilage. Additionally, four primary ligaments provide essential stability: the Anterior Cruciate Ligament (ACL), the Posterior Cruciate Ligament (PCL), and the collateral ligaments (MCL and LCL). Together, they prevent abnormal shifting of the bones while allowing for controlled flexion and extension.
The mobility provided by the knee is vital for daily balance and locomotion. Through its ability to flex and rotate slightly, it allows the lower limb to adapt to different surfaces and impacts. Athletes and dancers often focus on strengthening the muscles surrounding the knee, such as the quadriceps and hamstrings, to improve range of motion and prevent ligamentous injuries.
Because the knee endures constant pressure throughout life, it is highly susceptible to degenerative conditions like Osteoarthritis and acute injuries such as meniscus tears. Proper orthopedic care and early diagnosis are essential to maintaining long-term joint health and preventing advanced wear.
Image 1 source: https://centrointegraldeosteopatia.com/
