2024年9月7日 · Flexion and extension are movements that occur in the sagittal plane. They refer to increasing and decreasing the angle between two body parts: Flexion refers to a movement that decreases the angle between two body parts. Flexion at the elbow is decreasing the angle between the ulna and the humerus.

2017年11月24日 · The main difference between flexion and extension is that flexion is the action that brings the two bones together, decreasing the angle between the bones whereas extension is the action that increases the angle between the two bones.

Flexion decreases the angle between two structures or joints as they bend or move closer together, whereas extension increases the angle between them as they straighten and move apart.

2024年2月27日 · Flexion and extension are terms used to describe the movement of body parts at the joint spaces. Flexion is the motion that reduces the angle between body parts, bringing them closer together.

Dorsiflexion and plantar flexion refer to extension or flexion of the foot at the ankle. These terms refer to flexion in direction of the "back" of the foot, which is the upper surface of the foot when standing, and flexion in direction of the sole of the foot.

In the limbs, flexion decreases the angle between the bones (bending of the joint), while extension increases the angle and straightens the joint. For the upper limb, all anterior-going motions are flexion and all posterior-going motions are extension.

2024年9月8日 · The key difference between flexion and extension lies in the direction and purpose of the movement. Flexion reduces the angle between bones, while extension increases it.

2023年7月20日 · Flexion, or bending, involves decreasing the angle between the two entities taking part in the movement (bones or body parts). In contrast, extension, or straightening, involves increasing the respective angle.

For the vertebral column, flexion (anterior flexion) is an anterior (forward) bending of the neck or body, while extension involves a posterior-directed motion, such as straightening from a flexed position or bending backward.

2024年12月20日 · What is knee flexion and extension? Knee flexion is the process of bending the knee joint, decreasing the angle between the thigh (femur) and lower leg (tibia). This action mainly involves the hamstring muscles contracting while the quadriceps relax.