Handwriting legibility and hand strength are closely tied. You might say they go hand-in-hand. (I had to go there!)
Among these muscles are a group called the lumbricals. The lumbrical muscles have a job to bend (flex) the MCP joints and extend (straighten) the PIP and DIP joints. When the lumbricals are in action, the hand might look like it is holding a plate with the big knuckles bent and the fingers extended.

Lumbrical Muscles of the Hands and Handwriting
The lumbrical muscles of the hands are important in handwriting. They are used to hold the pencil in a functional grasp. Advancing the pencil in an upward motion using the joints of the fingers require strength and endurance of the lumbrical muscles. Forming letters like upstrokes in cursive letters and the re-trace of letters like a, d, g, h, m, n, p, q, r, u, v, and w require upward pencil strokes.
Hand strength can be developed through many creative, hands-on activities, like blocks and rubber bands or rolling balls of play dough. This kitchen tong activity is another fun way to work on important skills.

Idea: Re-use the blocks to build MORE fine motor skill development like we did here.

Using tongs to work on handwriting

More intrinsic muscles needed in handwriting
The muscles used in handwriting can be broken up into two actions.
- flexor digiti minimi, abductor digiti minimi and opponens pollicis & digiti minimi are referred to as the hypothenar muscles work to stabilize the ulnar side of the hand during handwriting.
- abductor pollicis brevis, flexor pollicis brevis, and opponens pollicis work to rotate the thumb for manipulation of the pencil.
- Adductor
pollicis strengthens thumb opposition.


- Magnetic Spoons and Handwriting Game
- Pencil Grasp Trick Thumb IP Flexion
- Thumb Opposition
- Fine Motor Play Dough Intrinsic Muscle Strength
- Pencil Control Exercises
- Pre-Writing Handwriting Lines

Colleen Beck, OTR/L has been an occupational therapist since 2000, working in school-based, hand therapy, outpatient peds, EI, and SNF. Colleen created The OT Toolbox to inspire therapists, teachers, and parents with easy and fun tools to help children thrive. Read her story about going from an OT making $3/hour (after paying for kids’ childcare) to a full-time OT resource creator for millions of readers. Want to collaborate? Send an email to contact@theottoolbox.com.





































































