Synthes 3.5mm Pelvic Cortex Screw | Self-Tapping | 105mm | 204.705

The Synthes 204.705 is a high-precision internal fixation implant engineered for the most demanding requirements of pelvic and acetabular reconstruction. As a 3.5mm diameter screw with an ultra-long 105mm length, it is designed to traverse the longest anatomical corridors of the pelvic ring, providing stable anchorage where standard cortical screws cannot reach.

The self-tapping design features precision-machined cutting flutes at the distal tip. While a 2.5mm pilot hole is required to establish the trajectory, the screw cuts its own internal threads as it advances. This ensures a high-friction "custom fit" between the screw and the bone, maximizing pull-out resistance—a critical factor in the high-stress biomechanical environment of the pelvis.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 204.705

• Material: 316L Surgical Stainless Steel

• Diameter: 3.5 mm

• Overall Length: 105 mm (Ultra-Long)

• Thread Pitch: 1.25 mm (Standard Cortex Pitch)

• Drive Type: 2.5 mm Hexagonal Socket

• Features: Self-Tapping Distal Flutes

• Quantity: 1 Each

Technical & Clinical Advantages

• Extreme Reach for Pelvic Corridors: The 105mm length is specifically intended for advanced pelvic fixation, such as trans-sacral, supra-acetabular, or long-span iliac wing stabilization. It allows the surgeon to bridge complex fracture lines and engage distant cortical surfaces for maximum stability.

• Superior Cortical Purchase: The shallow, tightly pitched threads are designed to grip the dense cortical bone of the ilium. In the pelvic region, where bone density can be inconsistent, the 204.705 provides reliable pull-out resistance across the entire 105mm span.

• Self-Tapping Efficiency: By integrating the tapping function into the screw tip, the 204.705 reduces the number of instrument passes in the surgical field. In 2026 surgical protocols, this efficiency is vital for minimizing operative time and reducing the risk of surgical site infections (SSI).

• High-Torque Drive Interface: The 2.5mm hexagonal socket provides a robust interface for controlled torque application. This allows for secure final tightening without the risk of "cam-out" or head stripping, even when driving through dense bone over a long trajectory.

• 316L Stainless Steel Biocompatibility: Forged from vacuum-melted surgical steel, the 204.705 offers the high fatigue strength and corrosion resistance required for long-term internal fixation in the high-load pelvic environment.

Applications

• Complex Pelvic Ring Disruptions: Stabilization of sacroiliac joint dislocations or long oblique iliac wing fractures.

• Acetabular Reconstruction: Securing the anterior or posterior columns where extreme-span fixation is necessary for anatomical restoration.

• Pelvic Osteotomies: Maintenance of alignment in major corrective pelvic surgeries for pediatric or adult dysplasia.

• Trauma Reconstruction: Providing long-distance lag compression or positional support for multi-fragmentary pelvic trauma.

Condition & Quality Assurance

• Status: NEW — Factory Sealed.

• Integrity: The implant is securely housed within its original manufacturer's packaging. Both inner and outer seals are intact, ensuring full material integrity and suitability for clinical use.

• Sterilization Note: This device is provided as a NON-STERILE implant. It MUST be properly cleaned and sterilized via validated steam autoclave protocols in accordance with hospital guidelines and Synthes’ Instructions for Use (IFU) prior to clinical implantation.

• Professional Standards: With over 25 years of experience in orthopedic logistics, Primis Medical ensures all Synthes implants are handled and stored to maintain their mechanical and chemical precision.

Shipping & Handling

• Secure Logistics: Shipped in reinforced packaging to ensure the ultra-long 105mm shaft remains perfectly straight and the distal self-tapping flutes remain pristine.

• Fast Dispatch: Ships within 1 business day.