A Malleolar Screw is an orthopedic bone screw for internal fracture fixation, primarily in the ankle region and metaphyseal areas of the skeleton. This screw type features a smooth shaft, a threaded section, and a self-cutting tip that in many configurations removes the need for pre-tapping. Sami’s Instruments manufactures Malleolar Screws in implant-grade materials across a broad range of diameters, lengths, and design options to suit varying fixation requirements.
Key Features and Design
Sami’s Instruments Malleolar Screws come with a choice of hexagonal head or hex drive, and are available in both cannulated and non-cannulated designs. Cannulated versions accept a guide wire, which supports accurate screw placement during surgery.
Thread options include partially threaded and fully threaded designs, as well as cancellous and cortical thread profiles. Cortical threads suit denser bone. Cancellous threads use a deeper, coarser profile to grip trabecular bone. Partially threaded designs can act as lag screws, drawing bone fragments together as the surgeon seats the screw. Fully threaded options suit plate fixation or situations where full thread engagement is needed.
Both self-tapping and non-self-tapping configurations are available.
Applications
Surgeons use Malleolar Screws in fracture fixation of the ankle, metaphyseal regions, distal humerus, and trochanteric area. The treating surgeon selects the appropriate screw based on fracture pattern, bone quality, anatomy, and the overall fixation construct.
Available Specifications
Diameter: 2.7 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 mm
Length: 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 35, 40, 45, 50 mm
Thread: Partially Threaded | Fully Threaded
Thread Profile: Cancellous | Cortical
Type: Cannulated | Non-Cannulated
Material: Stainless Steel 316L | Stainless Steel 316LVM | Titanium
Finish: Satin | Mirror
Why Configuration Matters
Diameter and length depend on bone size and the required fixation depth. The thread profile — cortical or cancellous — matches the target bone density. Partially threaded designs serve lag fixation purposes. Fully threaded screws deliver uniform engagement across the full screw length. Cannulation supports guide-wire-assisted placement where the surgical approach demands it.
Material selection between Stainless Steel 316L, 316LVM, and Titanium reflects differences in strength, corrosion resistance, and imaging compatibility. Available configurations may vary by diameter, thread design, and length combination. Contact Sami’s Instruments for specific configuration availability.
ISO, CNC, Chamber of Commerce & Surgical Instruments Manufacturers Association Certification Images – Sami’s Instruments
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