Digit joint implant Flex Finger System

<b>Overview</b> Non-fixed flexible-hinge design gains stability via soft-tissue encapsulation. Stem permits micro-motion for uniform load distribution. Dynamically dissipates compressive load to prevent stress concentration and facilitate bone remodeling. Press-fit titanium washer protects implant from wear and bone-cutting. Delivers improved joint alignment and capsuloligamentous reconstruction compared with conventional resection arthroplasty.<br><br><b>Dual-Function Flexible Implant Design</b> The implant functions as both a dynamic spacer and an internal scaffold: it maintains alignment and spacing of the reconstructed joint, provides structural support for the forming capsuloligamentous system, and enables a biomechanical reconstruction that improves on simple resection arthroplasty.<br><br><b>Bone Remodeling Advantages</b> The non-fixed design permits compressive loads to be distributed evenly across the resection surface and cortical diaphysis, avoiding stress concentration. It helps preserve bone length, maintain the natural morphology of the osteotomized end, promote cortical thickening and new bone formation around the implant, and supports long-term bone integrity.<br><br><b>Stability Mechanism</b> Stability is provided by encapsulation within surrounding soft tissues rather than permanent fixation. The stem allows controlled micro-motion to even load transfer. The flexible hinge dynamically aligns to the optimal mechanical axis of rotation, enhancing coordinated joint movement.<br><br><b>Press-Fit Washer Protection System</b> A non-attached press-fit titanium washer protects the implant mid-section from wear, abrasion and bone-cutting. This passive protection reduces local damage risk and improves biomechanical compatibility at the implant–bone interface.<br><br><b>Applications / Clinical Benefits</b> <ul><li>Maintains joint alignment and spacing during reconstruction</li><li>Promotes bone remodeling and cortical thickening</li><li>Preserves bone length and natural morphology after osteotomy</li><li>Reduces implant wear and bone-cutting via press-fit protection</li><li>Improves joint alignment and capsuloligamentous reconstruction versus resection arthroplasty</li></ul><br><b>Technical specifications</b> <ul><li>Design: Non-fixed flexible-hinge implant</li><li>Stability mechanism: Soft-tissue encapsulation (no permanent fixation required)</li><li>Stem: Permits micro-motion for uniform load distribution</li><li>Load behavior: Dynamically dissipates compressive loads to prevent stress concentration</li><li>Bone effects: Preserves bone length; promotes cortical thickening and new bone formation</li><li>Protection: Press-fit titanium washer to protect implant mid-section from wear and bone-cutting</li><li>Biomechanical benefit: Flexible hinge adjusts to optimal mechanical axis of rotation</li><li>Clinical advantage: Improved joint alignment and capsuloligamentous reconstruction versus resection arthroplasty</li></ul>