Rib Cage Movements

Question 1

Pump Handle Movement 
Ribs
Joints
Axis involved 
Dimension affected

Answer 1

Definition
Pump-handle is a movement of the ribs that results in a change in the anteroposterior diameter of the thorax.

Ribs
movement of primarily 2nd to 6th ribs

Joints
Movement of the ribs occurs at 2nd to 6th costovertebral joints.

Axis involved
movement of the 2nd to 6th ribs occurs at the costovertebral joints with the axis passing through the necks of the ribs, causing the anterior ends of the ribs to rise.

Dimension affected
Anteroposterior dimension of the thorax increases.

Question 2

Bucket Handle Movement 
Ribs 
Joints 
Axis Involved 
Diameters Affected

Answer 2

Definition
Bucket-handle is a movement of ribs that results in change in transverse diameter of the thorax.

Ribs
7th to 10th rib.

Joints
the movement occurs at 7th to10th costovertebral joints

Axis involved
movement of 7th to 10th rib occurs at costovertebral joints at about an anteroposterior axis resulting in rising and lowering of middle/lateral most part of the ribs.

Dimension affected
Transverse dimension of the thorax increases.