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    Brand: Orfit
    Meet Isoforce Outrigger System – your solution for stiff PIP and IP joints. Developed in collaboration with experts and available in small, medium, and large sizes, Isoforce ensures constant force and a 90-degree application angle. Its non-bulky design is perfect for dynamic or static progressive orthoses, providing easy force adjustments for optimal patient care. Backed by biomechanical studies, Isoforce is the trusted choice for addressing joint extension issues and flexion contractures.
    SKU: WEB001334
    Code Size Unit of Measure
    Code: OF35322 Size: Small Unit of Measure: EA
    Code: OF35323 Size: Medium Unit of Measure: EA
    Code: OF35324 Size: Large Unit of Measure: EA

    Introducing the Isoforce Outrigger System – a groundbreaking orthotic solution meticulously crafted to address the challenges of stiff proximal interphalangeal (PIP) and interphalangeal (IP) joints. Developed in collaboration with Mrs. Jörn Good, Hand and Occupational Therapist at Schulthess Klinik in Switzerland, and ETH Zurich, Isoforce is the result of cutting-edge biomechanical research.

    Key Characteristics:

    • Application to Dorsal Hand-Based Orthoses: Isoforce seamlessly integrates into dorsal hand-based orthoses, offering a comprehensive solution for joint stiffness.
    • Constant Force Transmission: Maintains consistent force transmission and a 90-degree force application angle throughout the entire PIP joint range of motion.
    • Versatile Sizing: Available in small, medium, and large sizes to accommodate various patient needs.
    • Non-Bulky Design: The outrigger system is designed to be non-bulky, ensuring comfort without compromising effectiveness.
    • Dynamic or Static Progressive Force Load: Adaptable for both dynamic and static progressive orthoses, providing flexibility in treatment approaches.
    • Easy Force Adjustment: Simplifies the adjustment of applied force, allowing for seamless customization as patients progress in joint range of motion.

    Recommended Applications:

    • Lack of Full Passive PIP Joint Extension: Isoforce is an effective solution for addressing issues related to the lack of full passive PIP joint extension.
    • PIP Joint Flexion Contracture: Designed to assist in managing and correcting PIP joint flexion contractures.


    Isoforce is not recommended for patients in the acute inflammatory stage post-injury, specific diagnoses that do not allow tension on stiff joints, joint instability, the presence of fibrotic tissue or infection, and unstable fractures.

    Backed by a biomechanical study published in the Journal of Hand Therapy (Marrel et al., 2016, 29: 451-8), Isoforce stands as a testament to precision engineering and clinical effectiveness. Embrace innovation in orthotic interventions with Isoforce – where constant force meets comprehensive care.

    Size Circumference of Proximal Interphalangeal Joint  Distance between Isoforce Pegs 
    Small 4.0 cm – 5.5 cm 15.8 mm
    Medium 5.5 cm – 7 cm  21.8 mm
    Large 7 cm and greater  27 mm
    Product Files
    Document Title Description
    Instruction for Use Download
    Technical Data Sheet Download
    Product Flyer - Isoforce Static Download
    Product Flyer - Isoforce Dynamic Download