06/01/2026
Tenodesis is a natural movement pattern that occurs between the wrist and fingers. When the wrist extends (bends backward), the fingers naturally flex or curl. When the wrist flexes (bends forward), the fingers naturally extend or open.
In handwriting, tenodesis plays an important role because:
* A slightly extended wrist helps position the fingers for an efficient pencil grasp.
* Wrist stability supports better finger control for letter formation.
* Children who write with a flexed wrist often have difficulty using the small muscles of the hand efficiently.
* Appropriate wrist extension allows the fingers to move with greater precision and endurance during writing tasks.
Activities that promote tenodesis for handwriting:
* Writing or drawing on a vertical surface (easel, wall, window).
* Coloring on a slant board.
* Using tweezers, tongs, or clothespins with the wrist extended.
* Weight-bearing activities such as wheelbarrow walks, animal walks, or crawling.
* Play activities that encourage wrist extension, such as building with blocks on a vertical surface.
Clinical implication:
When a child demonstrates poor pencil grasp, hand fatigue, decreased handwriting speed, or awkward wrist positioning, evaluating wrist stability and the use of the tenodesis pattern can provide valuable information about underlying fine motor challenges.
