Synthes 207.018 4.0mm Cancellous Bone Screw Partially Threaded/18mm

Synthes 4.0mm Cancellous Bone Screw | Partially Threaded | 18mm Length | 207.018

The Synthes 207.018 is a precision-engineered internal fixation implant designed specifically for engagement in cancellous (spongy) bone. As a 4.0mm diameter screw with an 18mm length, it is a core component of the Synthes Small Fragment System. This screw features a partially threaded design, which is the mechanical prerequisite for creating a "lag effect." This allows the surgeon to achieve high-pressure interfragmentary compression in metaphyseal or epiphyseal regions where bone density is lower.

Forged from implant-grade 316L Stainless Steel, the 207.018 provides superior pull-out resistance in the trabecular bone matrix, where standard cortical screws typically lack sufficient anchorage.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 207.018

• Material: 316L Stainless Steel (Surgical Grade)

• Screw Diameter: 4.0 mm

• Thread Profile: Partially Threaded (Lag Design)

• Screw Length: 18 mm

• Thread Pitch: 1.75 mm

• Core Diameter: 2.0 mm

• Shaft Diameter: 2.4 mm (Smooth proximal portion)

• Head Type: 6.0 mm Head with Hexagonal Socket

• Quantity: Individually Packaged (Non-Sterile)

Technical & Clinical Advantages

• Mechanical Lag Effect: The partial threading ensures that threads only engage the far (distal) bone fragment. As the screw is tightened, the smooth 2.4mm proximal shaft glides through the near fragment, allowing the screw head to compress the two bone segments together.

• Deep Cancellous Thread Geometry: The wide 1.75mm pitch is specifically designed to "grasp" the porous matrix of cancellous bone. This maximizes surface area contact, ensuring stable fixation in the soft, spongy bone found in joint ends.

• High-Torque Hex Drive: The hexagonal recess provides a secure interface for the driver, allowing for the transmission of precise torque. This ensures the screw is seated firmly without the risk of stripping the head or losing tactile feedback.

• System Versatility: The 6.0mm spherical head is designed to fit perfectly within the counter-sunk holes of Synthes 3.5mm LCP (Locking Compression Plates) or DCP systems. Alternatively, it can be used with a 7.0mm washer for stand-alone fixation to prevent the head from sinking into the bone surface.

• 316L Stainless Steel Biocompatibility: Cold-worked for high fatigue resistance, the material is biologically inert and designed to maintain its mechanical integrity throughout the biological stages of bone healing.

Applications

• Trauma Surgery: Stabilization of small metaphyseal fractures in the distal radius, medial malleolus, or olecranon.

• Avulsion Fractures: Securely anchoring bone-tendon fragments where a short 18mm reach is required for compression.

• Plate Fixation: Utilizing the screw as a "lag screw" through a 3.5mm plating construct to achieve interfragmentary compression across an oblique fracture line.

• Pediatric Orthopedics: Fixation of epiphyseal injuries where a short, robust screw is needed to avoid growth plate interference.

Condition & Quality Assurance

• Status: NEW — Original Manufacturer's Packaging.

• Integrity: This implant is new and has never been used. As a non-sterile component, it must be inspected for thread integrity and processed through a validated sterilization cycle (typically steam autoclaving) in accordance with hospital protocols and Synthes IFU (Instructions for Use) prior to clinical use in 2026.

• Professional Standards: With over 25 years of experience in surgical hardware, Primis Medical ensures all small fragment implants are maintained in optimal conditions to preserve the structural integrity of the 316L steel.

Shipping & Handling

• Secure Logistics: Shipped in protective packaging to ensure the precision-machined 4.0mm threads and hexagonal socket remain pristine and ready for sterilization.

• Fast Dispatch: Ships within 1 business day.