Synthes 208.416 6.5mm Cannulated Screw 16mm Thread 105mm

Synthes 6.5mm Cannulated Screw | 16mm Short Thread | 105mm | 208.416

The Synthes 208.416 is a high-strength internal fixation implant engineered for the stabilization of large bone fragments and complex fractures in deep anatomical corridors. As a 6.5mm diameter screw with an extended 105mm length and a 16mm short thread, it is a specialized component of the Synthes 6.5mm Cannulated Screw System.

The cannulated design features a 2.9mm internal bore, allowing the screw to be accurately guided over a 2.8mm guide wire. This ensures the screw follows a precise, pre-determined trajectory—a critical requirement for procedures like femoral neck fixation or percutaneous pelvic stabilization. The 16mm short thread configuration is specifically engineered to facilitate interfragmentary compression (the "lag" effect); the threads engage only the "far" bone fragment, while the smooth proximal shaft glides through the "near" fragment, drawing them together as the screw is tightened.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 208.416

• Material: 316L Surgical Stainless Steel

• Diameter: 6.5 mm

• Overall Length: 105 mm

• Thread Length: 16 mm (Short Thread)

• Thread Pitch: 2.75 mm (Cancellous Profile)

• Core / Shaft Diameter: 4.5 mm / 4.8 mm

• Cannulation Diameter: 2.9 mm (Compatible with 2.8mm Guide Wires)

• Head Diameter: 7.9 mm

• Drive Type: 4.0 mm Hexagonal Socket

• Quantity: 1 Each (Individually Packaged)

Technical & Clinical Advantages

• Precision Guided Insertion: The ability to verify guide wire position via fluoroscopy before screw advancement significantly reduces the risk of cortical perforation and malreduction in deep surgical sites.

• Controlled Interfragmentary Compression: Because the 16mm threads are significantly shorter than the 105mm total length, the screw acts as a high-strength lag screw. This is the gold standard for achieving primary bone healing in metaphyseal fractures.

• High-Torque Hex Drive: The 4.0mm hexagonal socket provides a robust interface for the high-torque insertion required to seat the 6.5mm head into dense bone without stripping the drive interface.

• Optimized Cancellous Thread: The 2.75mm wide-pitch thread is designed specifically for spongy, metaphyseal bone, providing superior pull-out resistance compared to standard cortical threads.

• Self-Drilling/Self-Tapping Tip: The engineered tip facilitates smooth entry into the pre-drilled path, minimizing insertion torque and reducing operative time in emergency trauma settings.

Applications

• Femoral Neck Fractures: Providing stable, guided fixation for intracapsular fractures where long-reach hardware is required.

• Slipped Capital Femoral Epiphysis (SCFE): Precise stabilization of the femoral head in pediatric or adolescent patients.

• Pelvic & Acetabular Fractures: Navigating long bone corridors (such as the iliosacral joint) for stable pelvic ring fixation.

• Tibial Plateau Fractures: Providing "subchondral rafting" or compression for large medial or lateral plateau fragments.

• Ankle Arthrodesis: Achieving high-compression across the tibiotalar joint in complex reconstructions.

Condition & Quality Assurance

• Status: NEW — Factory Sealed.

• Integrity: This implant is unused and maintains its original material integrity. The 2.9mm cannulation is verified clear for smooth wire passage.

• Sterilization Note: This item is typically provided as a NON-STERILE implant. It MUST be properly cleaned and sterilized (standard steam autoclave) in accordance with validated hospital protocols and Synthes’ Instructions for Use (IFU) prior to 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 their mechanical and chemical precision.

Shipping & Handling

• Secure Logistics: Shipped in protective, long-format packaging to ensure the 105mm shaft remains perfectly straight and the sterile pouch (if applicable) remains uncompromised.

• Fast Dispatch: Ships within 1 business day.