Question

What kind of joint is the knee joint and what kind of motion does it have?

Answer 1

The knee joint is a hi-nge joint, primarily allowing flexion and extension movements.

Step-by-step explanation:

The knee joint is classified as a hi-nge joint, characterized by its ability to primarily perform flexion and extension movements. In flexion, the joint angle decreases, bringing the lower leg closer to the thigh. Extension, on the other hand, involves increasing the joint angle, straightening the leg.

The knee joint's hi-nge-like structure facilitates these pivotal movements, crucial for activities like walking, running, and standing. While the knee does have some degree of rotation and slight lateral movements, its predominant function as a h-inge joint emphasizes its role in the essential bending and straightening actions required for various daily and athletic activities.

Answer 2

The knee joint is classified as a hing* joint. The kind of motion that it has is primarily in one plane, allowing for forward and backward movement.

Step-by-step explanation:

The knee is a hing* joint that allows for bending and straightening of the lower leg, which enables sitting, standing, and pivoting, but can be prone to injuries from hyperextension and twisting. This joint is complex and consists of three articulations: the femoropatellar joint, medial tibiofemoral joint, and lateral tibiofemoral joint.

These articulations work together within a single articular capsule to facilitate the primary actions of the knee: flexion (bending) and extension (straightening) of the lower leg. These movements enable sitting, standing, and pivoting motions. Additionally, the knee allows for a limited amount of rotation when flexed. However, it is important to note that the knee is vulnerable to injuries related to hyperextension, twisting, or lateral blows, especially while bearing weight.