Proximal interphalangeal joint (PIPJ) flexion contractures are a common complication from injuries to that joint or disease processes such...
Dynamic Uniplanar External Fixation
Evolution of Dynamic Uniplanar External Fixation
Treatment to reverse the debilitating soft tissue contractures has traditionally been ineffective with splints, which are limited by the ability of the skin to tolerate pressure at the skin-splint interface. Serial casting, another labor intensive option, has the complication of limiting flexion in adjacent joints.
Technology Spotlight
Agee Digit Widget Hand Biomechanics
The Agee Digit Widget® was designed to apply the force needed to reverse the contractures directly through the skeleton. The extension torque is limited to the PIPJ and respects adjacent joints. There is also an avoidance of skin pressure due to the nature of being an external fixator. The dynamic nature of the device allows active flexion at the PIPJ, encouraging functional use of the hand during treatment. The amount of extension torque can be adjusted with rubber bands, to balance treatment and avoid complications such as joint inflammation.
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Related Topics
The anatomy of the PIPJ lends itself to rapid and seemingly irreversibly flexion contractures. The flexor tendons are much...
