Synthes 214.550 4.5mm Cannulated Screw Partially Threaded/50mm

Synthes 4.5mm Cannulated Screw | Partially Threaded | 50mm | 214.550

The Synthes 214.550 is a high-precision internal fixation implant engineered for stable anchorage and active interfragmentary compression. As a 4.5mm diameter screw with a 50mm overall length and a partially threaded profile, it is a foundational component of the Synthes 4.5mm Cannulated Screw System.

The partially threaded design is specifically engineered to function as a lag screw. By ensuring the threads only engage the "far" bone fragment while the smooth proximal shaft glides through the "near" fragment, the screw head draws the two pieces together. This creates high-tension compression across the fracture line, which is essential for primary bone healing and rotational stability.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 214.550

• Material: 316L Surgical Stainless Steel

• Diameter: 4.5 mm

• Overall Length: 50 mm

• Thread Type: Partially Threaded (Lag Design)

• Thread Pitch: 1.75 mm

• Cannulation: 1.75 mm (Compatible with 1.6mm Guide Wires)

• Drive Type: 3.5 mm Large Hexagonal Socket

• Features: Self-Drilling, Self-Tapping, Cannulated

• Quantity: 1 Each

Technical & Clinical Advantages

• Precision Guided Placement: The 1.75mm internal bore allows the screw to be delivered over a pre-placed 1.6mm guide wire. This enables the surgeon to confirm the trajectory via fluoroscopy before the screw is seated, facilitating minimally invasive percutaneous placement and reducing soft-tissue disruption.

• Controlled Interfragmentary Compression: The smooth shaft prevents "thread-locking" in the near fragment. This ensures that the rotational force of insertion is converted entirely into compressive force at the fracture site, promoting rapid biological union.

• Self-Drilling & Self-Tapping Tip: The distal tip features precision-machined cutting flutes that eliminate the need for separate drilling and tapping steps in most cancellous bone applications. This reduces operative time and minimizes instrumentation requirements on the surgical field.

• High-Torque Drive Interface: The 3.5mm hexagonal socket provides a robust interface for high-torque insertion, minimizing the risk of head stripping or "cam-out" during final seating in dense cortical bone.

• 316L Stainless Steel Biocompatibility: Forged from vacuum-melted surgical steel, the 214.550 is highly corrosion-resistant and biologically inert, ensuring mechanical reliability throughout the 2026 healing cycle.

Applications

• Ankle & Foot Surgery: Fixation of medial malleolar fractures, calcaneal osteotomies, and midfoot fusions.

• Metaphyseal Trauma: Stabilization of large avulsion fractures or periarticular fragments in the proximal or distal tibia and humerus.

• Pelvic & Acetabular Surgery: Providing stable compression in pelvic ring disruptions where a 4.5mm diameter offers the necessary shear strength.

• Pediatric Orthopedics: Precise fixation of epiphyseal fractures (Salter-Harris) where the guide wire protects the growth plate during planning.

Condition & Quality Assurance

• Status: NEW — Factory Sealed.

• Integrity: This 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 in STERILE packaging. It is ready for immediate surgical use, provided the sterile barrier is uncompromised and the expiration date is verified per hospital protocol.

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

Shipping & Handling

• Secure Logistics: Shipped in protective packaging to ensure the 50mm shaft remains perfectly straight and the internal cannulation remains unobstructed.

• Fast Dispatch: Ships within 1 business day.