Synthes 208.406 6.5mm Cannulated Screw 16mm Thread 55mm

Synthes 6.5mm Cannulated Screw | 16mm Thread | 55mm Length | 208.406

The Synthes 208.406 is a high-load internal fixation implant designed for the stabilization of fractures in large bone structures. As a 6.5mm diameter cannulated screw, it features a 2.9mm central core designed for precise placement over a pre-positioned 2.8mm guide wire. This "over-the-wire" technique is the clinical standard for minimally invasive (percutaneous) procedures, allowing the surgeon to confirm the exact trajectory via fluoroscopy before the screw is advanced.

The 16mm Short Thread configuration (partially threaded) is specifically engineered to provide a powerful lag effect. By ensuring the threads engage only the distal fragment while the smooth 4.8mm proximal shaft sits in the near fragment, the screw head draws the bone pieces together, generating high-pressure interfragmentary compression.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 208.406

• Material: 316L Stainless Steel (Surgical Grade)

• Screw Diameter: 6.5 mm

• Thread Profile: 16 mm Short Thread (Partial)

• Screw Length: 55 mm

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

• Thread Pitch: 2.75 mm

• Core Diameter: 4.5 mm

• Head Type: 7.9 mm Head with 4 mm Hexagonal Socket

• Quantity: Individually Packaged (Non-Sterile)

Technical & Clinical Advantages

• Guide-Wire Controlled Precision: The cannulated design eliminates the risk of "wandering" or misdirection in dense cancellous bone. Once the 2.8mm guide wire is positioned, the screw follows the wire exactly, ensuring anatomical accuracy in deep or complex surgical sites.

• Superior Interfragmentary Compression: The 16mm thread length is optimized for "lagging" large fragments. Because the threads do not cross the fracture line into the proximal bone, the screw acts as a mechanical vice, pulling the distal fragment toward the head to close the fracture gap.

• Self-Drilling & Self-Tapping Tip: The distal tip features high-efficiency cutting flutes that allow the screw to be inserted directly over the guide wire in most cancellous bone applications, reducing operative steps and anesthesia time.

• High-Torque Hex Drive: The 4.0mm hexagonal recess provides the structural integrity required to transmit the high torque levels necessary for deep insertion into the femoral neck or pelvic cortex without stripping the head.

• 316L Stainless Steel Biocompatibility: Forged for high fatigue resistance, the material is designed to withstand the significant cyclic loads associated with weight-bearing in the femur and tibia during the healing process.

Applications

• Hip Surgery: Fixation of femoral neck fractures (intracapsular) and slipped capital femoral epiphysis (SCFE).

• Pelvic & Acetabular Trauma: Stabilization of sacroiliac (SI) joint disruptions and large pelvic ring fractures.

• Knee Trauma: Compression of tibial plateau fractures or distal femoral condyle fractures where a 55mm reach is required.

• Ankle Arthrodesis: Large-joint fusions requiring significant compressive force across the joint space.

Condition & Quality Assurance

• Status: NEW — Original Manufacturer's Packaging.

• Integrity: This implant is new. As a non-sterile component, it must be inspected for thread integrity and processed through a validated sterilization cycle (typically steam autoclaving) in accordance with hospital protocols and Synthes IFU (Instructions for Use) prior to clinical use in 2026.

• Professional Standards: With over 25 years of experience in surgical hardware, Primis Medical ensures all large-fragment implants are maintained in optimal conditions to preserve the mechanical and sterile integrity of the system.

Shipping & Handling

• Secure Logistics: Shipped in reinforced packaging to ensure the internal cannulation remains unobstructed and the precision-ground threads remain pristine.

• Fast Dispatch: Ships within 1 business day.