Hyperextension of the knee joint, often referred to as knee locking, involves extending the leg beyond its normal range of motion, causing the knee to straighten excessively. This action shifts the body’s weight anteriorly, primarily supported by the skeletal structure rather than the surrounding musculature. An example includes standing for prolonged periods and unconsciously pushing the knees backward to maintain an upright posture.
Maintaining stability through skeletal locking requires less muscular effort, offering a perceived short-term energy saving. Historically, this posture has been observed in professions demanding static standing, such as military personnel during formal events. However, consistent hyperextension places undue stress on ligaments and joint surfaces, potentially leading to long-term complications and instability.