Final answer:
The type of joint present in both the knee and the elbow is an interphalangeal joint, with a similar structure, and primary movements of flexion and extension.
Step-by-step explanation:
A interphalangeal joint is a synovial joint that allows movement primarily in one plane, like the opening and closing of a door. This type of joint is formed between two or more bones where the motion is limited to flexion and extension. In the case of the knee, the interphalangeal joint allows for bending (flexion) and straightening (extension) of the leg. Similarly, the interphalangeal joint in the elbow enables bending (flexion) and straightening (extension) of the arm.
The knee joint is one of the largest and most complex joints in the human body. It is classified as a synovial interphalangeal joint due to its ability to primarily flex and extend, with limited medial and lateral rotation. The knee joint is formed by the articulation of three bones: the femur (thigh bone), tibia (shin bone), and patella (kneecap). The ends of these bones are covered with articular cartilage, and ligaments, tendons, and muscles hold them together.