Synthes 204.850 3.5mm Cortex Screw Self-Tapping 50mm

Synthes 3.5mm Cortex Screw | Self-Tapping | 50mm Length | 204.850

The Synthes 204.850 is a high-performance internal fixation implant engineered for secure anchorage in dense cortical bone. As a 3.5mm diameter screw with a substantial 50mm length, it is a foundational component of the Synthes Small Fragment System. This screw is designed to provide maximum structural stability in diaphyseal bone, making it a primary choice for treating fractures of the fibula, humerus, and radius/ulna where a mid-to-long reach is required.

The self-tapping distal tip features precision-machined cutting flutes that carve a matching thread path as the screw is advanced into a 2.5mm pilot hole. This eliminates the manual tapping step, which is a significant clinical advantage when navigating a 50mm trajectory, as it maintains superior tactile feedback and reduces operative time.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 204.850

• Material: 316L Stainless Steel (Surgical Grade)

• Screw Diameter: 3.5 mm

• Thread Profile: Self-Tapping / Fully Threaded

• Screw Length: 50 mm

• Core Diameter: 2.4 mm

• Head Type: Spherical Head with 2.5 mm Hexagonal Socket

• Quantity: Individually Packaged, Sterile

Technical & Clinical Advantages

• Optimized Cortical Pitch: The thread pattern is specifically calibrated for the dense mineral matrix of cortical bone. This geometry maximizes surface area contact, providing the high pull-out resistance required for long-bone stabilization.

• Self-Tapping Efficiency: By integrating cutting flutes into the screw tip, this implant reduces the number of surgical steps. It allows for direct insertion following the drill pass, which is particularly beneficial in trauma scenarios where reducing anesthesia time is critical.

• Bicortical Stability (50mm): The 50mm length is ideal for bicortical fixation in the humerus or proximal tibia, or for anchoring plates in areas of thick cortical bone where standard small-fragment lengths (10–40mm) fall short.

• Universal Plate Compatibility: The spherical head is precisely engineered to sit flush within the counter-sunk holes of Synthes DCP (Dynamic Compression Plates), LC-DCP (Limited Contact), and the non-locking portion of Small Fragment LCP Combi-holes.

• 316L Stainless Steel Biocompatibility: Cold-worked for high fatigue strength, the material is biologically inert and designed to withstand the cyclic loads encountered during the early stages of weight-bearing rehabilitation.

Applications

• Trauma Surgery: Fixation of diaphyseal fractures in the fibula, humerus, or radius/ulna where a longer screw is required for bicortical purchase.

• Plate Fixation: Serving as a "neutralization" or "compression" screw when used through 3.5mm small fragment plating systems.

• Malleolar Fixation: Stabilization of lateral malleolus fractures where a 50mm trajectory provides secure purchase in the syndesmosis region.

• Pelvic Reconstruction: Used in small-fragment pelvic sets for specific acetabular or pelvic ring fractures requiring deep cortical anchorage.

Condition & Quality Assurance

• Status: NEW — Factory Sealed & Sterile.

• Integrity: This implant is securely packaged within its original manufacturer's sterile peel-pouch. The packaging is intact, ensuring the product's sterility, material integrity, and full lot traceability for clinical implantation in 2026.

• Professional Standards: With over 25 years of experience in surgical hardware, Primis Medical ensures all Synthes implants are stored in climate-controlled environments to preserve the mechanical and sterile integrity of the system.

Shipping & Handling

• Secure Logistics: Shipped in protective packaging to ensure the sterile barrier remains uncompromised and the precision-machined 50mm shaft remains perfectly straight.

• Fast Dispatch: Ships within 1 business day.