Physical Principle: Lever and Compression
The proposed wrist brace design incorporates the principles of a lever and compression to achieve its product requirements. A lever is a simple machine that consists of a rigid beam that pivots around a fixed point called the fulcrum. In this case, the wrist joint acts as the fulcrum, while the brace provides the lever arm. By applying pressure to the brace, a force is exerted on the wrist joint, controlling its movement and providing support. Compression is applied to the wrist to manage swelling, promote blood circulation, and provide additional support.
The wrist joint acts as fulcrum and the brace as lever arm so if you apply a force on the brace the force at wrist joint is directly related to it. So by adjusting the force/pressure applied at the brace, it allows precise control of the wrist joint and also the level of compression that is needed for reducing swelling by displacing the excess fluid caused by the injury.
1.Biomechanical Principles
 a.Immobilization
 The brace will use rigid materials (e.g., thermoplastic or aluminum) to create a supportive shell that restricts movement of the wrist joint. This can be achieved through a structured design that limits flexion, extension, and rotation.
 b.Support and Compression
The brace will incorporate elastic materials (e.g., neoprene) that provide compressive forces around the wrist. This compression reduces swelling and promotes blood flow, aiding in recovery.
 c.Ergonomics
The brace will be contoured to the natural anatomy of the wrist and hand, distributing pressure evenly to enhance comfort and reduce irritation.

 2.Material Selection
 a. Durability and Lightweight
Using high-strength, lightweight polymers for the rigid frame and breathable fabrics for the outer layer ensures longevity while maintaining comfort.
 b. Breathability
 Incorporating mesh panels or perforated designs will allow for air circulation, preventing moisture buildup.