A PP humeral fracture brace (Sarmiento brace) is a lightweight, durable orthotic device made from polypropylene (PP) or polyethylene (PE) that provides circumferential compression to stabilize mid-shaft and distal humerus fractures, allowing controlled joint movement for faster recovery.
General Specifications
- Material: The rigid outer shell is typically made of polypropylene (PP) or polyethylene (PE) plastic, often combined with Polyvinyl Chloride (PVC), ensuring it is both lightweight and durable.
- Lining: The inner lining features a soft, closed-cell foam padding (Ethaflex or EVA foam) that does not absorb moisture, ensuring comfort and hygiene for the patient.
- Design: It consists of two overlapping anterior and posterior shells (clamshell design) that provide 360-degree circumferential compression.
- Closure: Multiple adjustable hook-and-loop (Velcro) straps secure the brace and allow for compression adjustments as swelling subsides.
- Fit: Most designs are neutral and universal, fitting both the right and left arms.
- Sizing: Available in various sizes (Small, Medium, Large, Extra Large) based on the patient’s bicep circumference and arm length to ensure a proper fit.
- Components: The brace often comes as a kit, including two double-thick cotton stockinettes and an optional arm sling for additional support.
- Weight: The brace is notably lightweight, typically around 200g-350g.
Key Features
- Circumferential Compression: The main functional feature, applying uniform soft tissue compression around the humerus to control bone segments and promote healing.
- Functional Design: Allows for a full range of motion in the shoulder and elbow joints to aid recovery, unlike a traditional cast that fully immobilizes the limb.
- Deltoid Cap Extension: An integrated extension over the shoulder helps prevent the brace from slipping distally (down the arm), ensuring proper alignment and fit.
- Breathability: The plastic shells often feature numerous slats and holes to allow heat and moisture to escape, improving air flow and patient comfort.
- Customization: The brace material can be trimmed with cast scissors and modified with a heat gun by a professional to achieve a custom fit for the patient.


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