Synthes 204.690 3.5mm Pelvic Cortex Screw Self-Tapping 90mm

Synthes 3.5mm Pelvic Cortex Screw | Self-Tapping | 90mm | 204.690

The Synthes 204.690 is a high-precision internal fixation implant specifically engineered for the complex requirements of pelvic and acetabular surgery. As a 3.5mm diameter screw with an extended 90mm length, it is designed to provide secure anchorage across the long corridors of the pelvic ring, where standard cortex screws lack sufficient 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: 204.690

• Material: 316L Surgical Stainless Steel

• Diameter: 3.5 mm

• Overall Length: 90 mm

• 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

• Extended Reach for Pelvic Corridors: The 90mm length is specifically intended for trans-iliac or supra-acetabular fixation. It allows the surgeon to bridge significant gaps in the pelvic ring or stabilize long fracture lines that require deep cortical purchase.

• Superior Cortical Purchase: The shallow, tightly pitched threads are designed to grip the dense cortical bone of the ilium and ischium. In the pelvic region, where bone density varies, the 204.690 provides reliable pull-out resistance even in challenging anatomical zones.

• Self-Tapping Efficiency: By integrating the tapping function into the screw tip, the 204.690 reduces the number of instrument passes in the surgical field. In 2026, where operative efficiency is linked to reduced infection rates, this feature is vital for minimizing the duration of anesthesia.

• 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.

• 316L Stainless Steel Biocompatibility: Forged from vacuum-melted surgical steel, the 204.690 offers the high fatigue strength and corrosion resistance required for long-term internal fixation in high-load areas.

Applications

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

• Acetabular Fractures: Securing columns of the acetabulum where long-span fixation is necessary for stability.

• Pelvic Osteotomies: Maintenance of alignment in corrective pelvic surgeries.

• Trauma Reconstruction: Providing long-distance lag compression for complex multi-fragmentary fractures of the pelvis.

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 90mm shaft remains perfectly straight and the distal self-tapping flutes remain pristine.

• Fast Dispatch: Ships within 1 business day.