internrotasjon

Internrotasjon, also known as internal rotation, is a term used in various fields such as medicine, biomechanics, and engineering to describe the movement of a body part or object around its longitudinal axis. In the context of human anatomy, internal rotation refers to the rotation of a limb or other body part towards the center of the body.

In the shoulder, internal rotation involves the movement of the arm towards the body's midline, such as when turning a doorknob. This movement is facilitated by several muscles, including the subscapularis, teres major, latissimus dorsi, pectoralis major, and the anterior deltoid. The range of internal rotation can vary depending on the individual and the specific joint involved.

In the hip, internal rotation is the movement of the leg towards the center of the body, such as when turning the foot inward. This movement is important for activities like walking, running, and dancing. The muscles responsible for hip internal rotation include the gluteus medius, gluteus minimus, and the tensor fasciae latae.

Internrotasjon can also refer to the rotation of an object around its own axis, such as a wheel or a propeller. In engineering, understanding internal rotation is crucial for designing and analyzing mechanical systems that involve rotational motion.

In summary, internrotasjon is a fundamental concept in various fields, describing the rotational movement of body parts or objects around their longitudinal axis. It plays a significant role in human movement and mechanical systems.