PHTY100 Lecture Notes - Lecture 2: Flight Control Surfaces, Hip Fracture, Psoas Major Muscle
Document Summary
Rotational movement: the movement of a bone as it rotates around its longitudinal axis: medial rotation: a rotational movement towards the midline. It is sometimes referred to as internal rotation. Example: with a straight leg, rotate it to point the toes inward: lateral rotation is a rotating movement away from the midline. Elevation refers to movement in a superior direction (e. g. shoulder shrug) Depression refers to movement in an inferior direction. Supination: this is easily confused with medial and lateral rotation, but the difference is subtle. With your hand resting on a table in front of you, and keeping your shoulder and elbow still, turn your hand into its back, palm up. This is the supine position, and so this movement is supination. Again, keeping the elbow and shoulder still, flip your hand into its front, palm down. This is the prone position, and so this movement is named pronation. When lying flat on the back, the body is supine.
