What plane is abduction of the thumb?

What plane is abduction of the thumb?

sagittal plane
Thumb movements. The thumb is rotated 90° to the other digits. Thus, abduction and adduction occur in a sagittal plane and flexion and extension occur in a coronal plane. Opposition, the action bringing the tip of the thumb in contact with the pads of the other fingers, is the most complex movement.

What plane of motion does thumb flexion occur in?

Flexion occurs when the angle between two adjacent segments in the body decreases as the ventral surfaces of the segments approximate each other and occurs in a sagittal plane about a frontal axis. An exception is flexion of the thumb, which takes place in a frontal plane about a sagittal axis.

What plane does abduction occur in?

Frontal plane
Frontal plane – passes from side to side and divides the body into the front and back. Abduction and adduction movements occur in this plane, eg jumping jack exercises, raising and lowering arms and legs sideways, cartwheel.

Where does abduction of the thumb occur?

The thumb abduction motion begins with the thumb aligned with second metacarpal. The movement, occurring only at the carpometacarpal (CMC) joint, brings the thumb away from the palm. Be aware that practitioners refer to thumb abduction in a plane 90 degrees to the palm as palmar abduction.

What is CMC palmar abduction?

1. The thumb’s MP and CMC joints abduct and adduct in a plane perpendicular to the palm. Some therapists also refer to abduction as “palmar abduction.”

What motions can occur at the thumb CMC and MCP joints?

CARPOMETACARPAL JOINTS It allows 40° to 50° of thumb flexion–extension parallel to the plane of the palm and 40° to 70° of adduction–abduction perpendicular to the plane of the palm. These movements are important in bringing the thumb in opposition with the fingers.

Which motion occurs at the thumb?

The movements at each thumb joint are flexion and extension (called radial abduction in the CMCJ) and additional movements of anteposition, retroposition and opposition at the CMCJ, due to the saddle shape of the articulation.

What are the 3 anatomical planes?

The three planes of motion are the sagittal, frontal and transverse planes. Sagittal Plane: Cuts the body into left and right halves.

What plane is hip abduction?

frontal plane
Next we have the frontal plane, this plane is all about hip abduction.

What plane is CMC flexion?

Kinematics: The motions at the CMC joint occur primarily in two degrees of freedom. Abduction and adduction occur generally in the sagittal plane, and flexion and extension occur generally in the frontal plane. The axis of rotation for each plane of movement passes through the convex member of the articulation.

Which finger and thumb motions occur in the frontal plane around the sagittal axis?

The CMC is a saddle joint: Both surfaces of the CMC are concave and convex. Which finger and thumb motion occur in the frontal plane around the sagittal axis? Thumb: CMC flexion/extension, MCP and IP flexion/extension.