Principles of Functional Exercise

TRAPEzIuS (LOWER FIBERS)

Joint Action perfomed by the scapula (scapular stabilizer)

1. Upper rotation


2. Adduction


3. Depression

Joint Action performed by Thoracic Spine

1. Extension

Origin: Spine – 1. Thoracic Vertebrae (T4-12) – Spinous Processes

Inserstion: 1. Scapula – Spine (inferior)

TRAPEzIuS (MIDDLE FIBERS)

Joint Action performed by the scapula

1. Retraction (adduction)


2. Elevation


3. Upward Rotation

For example the squeezing together of the scapulars acts as a scapular stabilizer

Origin: 1. Cervical vertebrae (C7) – Spinous Process 2. Thoracic vertebrae (T1-T3) –
Spinous Processes

Insertion: 1. Scapula – Acromion process, Spine (superior)

Common distortions due to weakness is scapular protraction and elevation (this contributes to
poor glenohumeral mechanics and rotator cuff dysfunction)

TRAPEzIuS (uPPER FIBERS)

Joint Action of the scapula

1. Elevation