Thixotropic pens are design specifically for people who experience difficulty with graphomotor skills, handwriting and drawing. Their size, balance and ink flow are uniquely suited to the needs of those with arthritis, carpal tunnel, cerebral palsy, hand injury and other conditions that affect digital dexterity.
Several studies have shown that grasp patterns do not significantly influence handwriting speed or legibility. Using the Thixotropic pen, occupational therapists can guide patients to adopt comfortable grip postures that reduce concentrated pressures on the distal and proximal interphalangeal joints and relive symptoms of fatigue.
Thixotropic pens solve the two main components that interfere with handwriting performance. First, their wide tapered grip area is approximately 1-inch (2.54 cm) in diameter. Most patients who have difficulty with grasping and/or pinching find this size easier to hold than other commercially available pens. The slightly textured powder-coat finish prevents the pen from slipping. Second, internal weights can be adjusted to alter the pen's center of gravity. A forward balance passively holds the pen's point to the writing surface so that patients are not required to exert excessive pressure. Thixotropic pens use a refillable roller ball ink cartridge that reduces friction between the pen's tip and the writing surface. Less force is needed for fluid writing motions.
Apart from its therapeutic value, a Thixotropic pen does not look like a medical device. Its elegantly curved profile and sleek black finish provides an attractive alternative to slide-on plastic pencil grips, foam tubes, odd "ergonomic" shapes, and mass market pens. Thixotropic pens are fine writing instruments that patients can proudly use to recover their joy and pleasure of handwriting.