Synthes 208.404 6.5mm Cannulated Screw 16mm Thread 45mm Orthopedic Hardware

Synthes 6.5mm Cannulated Screw | 16mm Short Thread | 45mm | 208.404

The Synthes 208.404 is a high-strength internal fixation implant engineered for the stabilization of large bone fragments and metaphyseal fractures. As a 6.5mm diameter screw with a 45mm length and a 16mm short thread, it is a cornerstone of the Synthes 6.5mm Cannulated Screw System.

The "Cannulated" design is a critical technical feature, featuring a 2.9mm internal bore that allows the screw to be accurately guided over a 2.8mm guide wire. This ensures the screw follows a precise, pre-determined trajectory, which is vital in complex anatomical regions like the femoral neck or the calcaneus. The 16mm short thread configuration is specifically designed to facilitate interfragmentary compression (the "lag" effect) by ensuring the threads only engage the "far" bone fragment.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 208.404

• Material: 316L Stainless Steel (Surgical Grade)

• Diameter: 6.5 mm

• Overall Length: 45 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: Individually Packaged

Technical & Clinical Advantages

• Precision Guided Insertion: The ability to place a guide wire first and verify position via fluoroscopy before inserting the screw significantly reduces the risk of cortical perforation and ensures optimal placement within the bone.

• Interfragmentary Compression: Because the 16mm threads are shorter than the total 45mm length, the smooth proximal shaft allows the screw to glide through the "near" fragment. As the distal threads engage the "far" fragment, the fragments are drawn together, promoting primary bone healing.

• High-Torque Hex Drive: The 4.0mm hexagonal socket allows for the application of substantial torque 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 engineered specifically for spongy, metaphyseal bone. This provides superior pull-out resistance and "grip" in lower-density bone structures compared to cortical threads.

• Self-Drilling/Self-Tapping Tip: The tip is designed to facilitate smooth entry into the pre-drilled path, minimizing insertion torque and reducing surgical time.

Applications

• Femoral Neck Fractures: Providing stable, guided fixation for intracapsular fractures.

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

• Ankle Arthrodesis: Providing high-compression across the tibiotalar or subtalar joints.

• Pelvic & Acetabular Fractures: Navigating complex corridors for stable pelvic ring fixation.

• Calcaneal Fractures: Stabilizing comminuted heel fractures via a minimally invasive percutaneous approach.

Condition & Quality Assurance

• Status: NEW — Factory Sealed.

• Integrity: This implant is securely packaged within its original manufacturer's packaging. It is untouched and maintains its original material integrity.

• 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 sterile integrity.

Shipping & Handling

• Secure Logistics: Shipped in protective packaging to ensure the precision-machined 45mm shaft and 2.9mm cannulation remain pristine and unobstructed.

• Fast Dispatch: Ships within 1 business day.