What causes the bucket handle movement of ribs?

When we inspire the chest wall expands by the movement of the ribs. So, the lower ribs elevate, which occurs in the frontal plane to increase the volume of the rib cage. This motion of lower ribs resembles the bucket handle movement, as you can see in this animation.

Which ribs are involved in bucket handle movement?

The first to sixth ribs are the ones primarily involved in this movement. During inspiration, the transverse diameter of the thorax is increased by the ribs swinging outward; bucket-handle rib motion. The seventh to tenth ribs are the ones primarily involved in this movement.

Which ribs do pump handle motion?

The upper ribs move upward and forward in a pump handle motion. (B) The axis of the lower ribs lies closer to the sagittal plane. The upward and lateral motion of these ribs is re- ferred to as bucket handle motion.

Which ribs are pump handle vs bucket handle?

The movement of true ribs can be best seen from a lateral view and resembles the motion of a pump handle. Whereas the false ribs have more of a bucket handle motion and can be seen posteriorly. These normal mechanics both work to best increase the thorax dimensions during inhalation and decrease it with exhalation.

What causes the rib cage to expand?

During normal breathing, contraction of the major inspiratory muscle, the diaphragm, produces both rib cage expansion and a downward movement of the diaphragm. These movements cause the pressure around and in the lung to become negative relative to atmosphere.

What is a rib in a pump?

Pump-Handle Rib Motion — Characteristic rib motion, primarily of the upper ribs, that occurs during respiration. The effect is to increase the anteroposterior diameter of the thorax during inspiration.

What happens during pump handle inspiration?

Biomechanics of pump handle movement During respiration, the ribs move to expand the chest during inspiration and contract during expiration. The diaphragm also moves up and down to increase or decrease the volume of the chest.

Why does the top of my ribs hurt?

The most common causes of rib cage pain are a pulled muscle or bruised ribs. Other causes of pain in the rib cage area may include: broken ribs. injuries to the chest.

Why do my ribs feel bruised but no injury?

Rib pain without traumatic injury may be due to muscular strain, joint inflammation, or a pain syndrome of unknown cause. Some systemic illness such as autoimmune disorders or fibromyalgia also cause rib pain.