Synthes 280.50 DHS/DCS Lag Screw 12.7mm Thread/50mm

Synthes DHS/DCS Lag Screw | 12.7mm Thread | 50mm | 280.50

The Synthes 280.50 is a primary component of the Dynamic Hip Screw (DHS) and Dynamic Condylar Screw (DCS) systems. At 50mm in length, this lag screw is typically utilized in pediatric orthopedics, patients with smaller anatomical frames, or in distal femoral reconstructions where a shorter reach is required to stabilize the condyles.

Its primary mechanical function is to interface with a DHS or DCS side plate. The screw provides massive purchase in the bone fragment, allowing it to "slide" within the plate's barrel. This creates controlled dynamic compression, which utilizes the body's own weight to impact the fracture and accelerate biological healing.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 280.50

• Material: 316L Surgical Stainless Steel

• Thread Diameter: 12.7 mm

• Overall Length: 50 mm

• Shaft Diameter: 8.0 mm

• Cannulation: 2.5 mm (Compatible with 2.5mm threaded guide pins)

• Internal Thread: For use with DHS/DCS compression screw

• Quantity: 1 Each

Technical & Clinical Advantages

• Cancellous Thread Profile: The 12.7mm threads are deep-cut and wide-pitched, specifically designed to maximize "grip" in the cancellous (spongy) bone of the femoral head or condyles. This prevents "cut-out," a common failure mode in osteoporotic bone.

• Precision Cannulation: The screw is hollow, allowing for insertion over a 2.5mm guide pin. This allows the surgeon to verify the exact trajectory via fluoroscopy (X-ray) before the final implant is seated, ensuring the screw is perfectly centered in the femoral neck.

• Polished Gliding Shaft: The 8.0mm shaft is precision-polished to slide without friction inside the barrel of the side plate. This ensures that the "sliding" mechanism remains active post-operatively, allowing the fracture to settle and compress naturally.

• Anti-Rotation "Two-Flat" Design: The lateral end of the screw features two machined flats. These engage with the internal geometry of the plate barrel to prevent the bone fragment from rotating around the screw, maintaining anatomical alignment.

• 316L Surgical Steel: Forged from vacuum-melted stainless steel, the 280.50 offers the high fatigue strength required for 2026 early-mobilization trauma protocols.

Applications

• Intertrochanteric Hip Fractures: Securing the femoral head fragment in smaller patients or pediatric cases.

• Distal Femur Fractures: Used with a DCS (Dynamic Condylar Screw) plate to stabilize fractures of the knee (supracondylar/intercondylar).

• Fixation of Large Fragments: Providing heavy-duty stabilization in metaphyseal bone where standard 4.5mm or 6.5mm screws lack sufficient purchase.

Condition & Quality Assurance

• Status: NEW — Factory Sealed.

• Integrity: The implant is securely packaged in its original manufacturer's packaging. Both inner and outer seals are intact, ensuring full material integrity and suitability for surgical 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 surgical logistics, Primis Medical ensures all Synthes hardware is stored in climate-controlled environments to preserve mechanical tolerances.

Shipping & Handling

• Secure Logistics: Shipped in reinforced packaging to protect the 12.7mm threads and ensure the 50mm shaft remains perfectly true.

• Fast Dispatch: Ships within 1 business day.