The Knee Joint: Motion in Action
The knee joint is one of the most complex and important joints in the body, allowing for bending, straightening, and rotational movements. It’s stabilized by key ligaments like the ACL, PCL, MCL, and LCL, while muscles like the quadriceps and hamstrings provide the power for movement.
膝关节是人体最复杂和最重要的关节之一，允许弯曲、伸直和旋转运动。它通过 ACL、PCL、MCL 和 LCL 等关键韧带得到稳定，而股四头肌和腘绳肌等肌肉提供运动的力量。
Together, these structures allow the knee to support body weight, walk, run, and jump.
这些结构共同使膝关节能够支撑体重、行走、奔跑和跳跃。
