Angular Motion
A group of little children were practicing hula hooping. This involves moving the hips in a specific motion. What type of angular motion takes place in this situation?
Circumduction
Turning your head side to side as if saying “no” is an example of which type of rotational movement?
Left and right rotation
While hiking a rough hill, Tim looses balance and twists his foot to face his soles outward, then twists it to face his soles inwards to catch himself.
Eversion (outward) → inversion (inward)
The goal keeper lifts both his arms up above his head to catch the ball from hitting the net. What type of angular motion is taking place in this situation?
Abduction
When you rotate your arm so the palm faces outward (away from the body) at the shoulder, what kind of rotation is this?
Lateral (external) rotation
Before a ballet performance, Susie stretches by pulling her feet towards her shin. During the performance, Susie rises to stand on the tips of her toes. What type of special ankle movements allow this to happen?
Dorsiflexion (stretch) → plantar flexion (performance)
In cultures such as Japanese, bowing heads isa sign of respect and is similar to a handshake. What type of angular motion is taking place in this action?
Flexion
Describe the difference between medial (internal) and lateral (external) rotation in terms of bone movement at the shoulder joint.
Hint: Focus on the Brachial Region
Medial Rotation: The humerus turns inward toward the body’s midline
Lateral Rotation: The humerus turns outward away from the midline
Vince bends his torso and stretches his head to one side, then he straightens his body. What type of special movement is this?
Lateral flexion
Kevin is doing jumping jacks at the gym. Jumping jacks involve your arms moving up and back down. What two angular motions are involved in this scenario?
Abduction - When the arms are up, it’s moving away from the body.
Adduction - When the arms are brought down, it’s moving toward the body.
When the forearm is pronated, how is the radius positioned relative to the ulna, and what is the palm’s orientation?
The radius crosses over the ulna, and the palm faces posteriorly or downward
Sofia drops her pencil, she brings her thumb towards her index finger to pick it up, then returns her hand to the normal position after placing the pencil on her desk. What are these special movements called?
Opposition → Reposition
Ana wanted to kick a soccer ball. Preparing to kick, she moves one leg behind while the other leg remains at the front. Then she swing her leg backward at the hip and kicks the ball as far as she can. What are the two types of angular motions involved in this scenario.
Extension - moving one leg behind, away from the body increasing the angle at the joint.
Hyperextension - swinging the leg backward at he hip, extending the leg beyond the normal limits.
A student rotates their forearm from anatomical position → until the palm faces posteriorly → then rotates it back to anatomical position.
Name The Following:
1. Each movement in order (arrows represent movement)
2. Explain which joints are primarily involved.
Movement:
→ Pronation → Supination
Joints Involved:
Both occur at the proximal and distal radio-ulnar joints, where the radius rotates over → then uncrosses from the ulna
To eat her burger, Abby lowers her jaw and pushes it forward to reach and bite it. She then returns her jaw to normal by bringing it back and closing it so she can chew her bite. What special motions were involved in this action?
Depression + protraction → Elevation + retraction