Synthes 280.350 DHS/DCS Lag Screw 12.7mm Thread 135mm Orthopedic Surgical

Synthes DHS/DCS Lag Screw | 12.7mm Diameter | 135mm Length | 280.350

The Synthes 280.350 is a high-strength internal fixation implant specifically engineered for the treatment of intertrochanteric hip fractures and distal femoral fractures. As a cornerstone of the DHS (Dynamic Hip Screw) and DCS (Dynamic Condylar Screw) systems, this 12.7mm diameter lag screw is designed to provide massive surface area engagement within the cancellous bone of the femoral head or condyles.

The unique design of the 280.350 allows for controlled collapse and dynamic compression of the fracture site. When used in conjunction with a DHS/DCS side plate, the lag screw slides within the plate's barrel, allowing the bone fragments to settle into a naturally compressed, stable position during weight-bearing.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 280.350

• Material: 316L Stainless Steel (High-Fatigue Surgical Grade)

• Screw Diameter: 12.7 mm

• Thread Diameter: 22 mm (Outer thread span)

• Total Length: 135 mm

• Thread Length: 135 mm (Fully threaded for maximum purchase)

• Cannulation: Compatible with 2.5 mm Guide Wires

• Quantity: Individually Packaged, Sterile

Technical & Clinical Advantages

• Dynamic Compression Mechanism: The smooth shaft of the lag screw is precision-machined to glide within the side plate barrel. This promotes primary bone healing by maintaining continuous interfragmentary compression as the patient rehabilitates.

• Superior Pull-out Resistance: The large 22mm thread span provides a massive "footprint" in the femoral head. This is critical for preventing "cut-out," a common complication in osteoporotic hip fractures where smaller hardware might fail.

• Guide-Wire Controlled Placement: The lag screw is cannulated for use with a 2.5mm guide wire. This ensures the screw follows the exact center-center trajectory in the femoral neck, as verified by intraoperative fluoroscopy.

• Self-Tapping Efficiency: The distal threads feature cutting flutes that allow for efficient insertion into the dense subchondral bone of the femoral head, reducing operative time and physical strain on the surgical team.

• Anti-Rotation Geometry: The proximal end of the screw features "flats" that interface with the DHS/DCS plate barrel, preventing the screw from rotating independently once the construct is locked, ensuring rotational stability of the femoral head.

Applications

• DHS Procedures: Primary fixation of stable and unstable intertrochanteric fractures (AO/OTA 31-A).

• DCS Procedures: Stabilization of supracondylar and distal femoral fractures (AO/OTA 33-A/C).

• Basilar Neck Fractures: Providing robust medial support in specific proximal femoral neck injuries.

• Subtrochanteric Fractures: Use in certain long-barrel DHS constructs where significant compression is required.

Condition & Quality Assurance

• Status: NEW — Factory Sealed & Sterile.

• Integrity: This implant is securely packaged within its original manufacturer's sterile double-pouch. The packaging is intact, ensuring the product's sterility, material integrity, and full lot traceability for clinical implantation in 2026.

• Professional Standards: With over 25 years of experience in orthopedic technology, Primis Medical ensures all heavy-fragment hardware is stored in climate-controlled environments to maintain the structural and sterile integrity of the 316L steel.

Shipping & Handling

• Secure Logistics: Shipped in reinforced, impact-resistant packaging to ensure the sterile barrier is protected and the high-tolerance sliding shaft remains pristine.

• Fast Dispatch: Ships within 1 business day.