Synthes 4.5mm Cannulated Screw | Partially Threaded | 56mm | 214.556

The Synthes 214.556 is a high-precision internal fixation implant engineered for stable anchorage and active compression in cancellous and metaphyseal bone. As a 4.5mm diameter screw with a 56mm overall length, it is a versatile component of the Synthes 4.5mm Cannulated Screw System.

The cannulated design features a 1.75mm internal bore, allowing the screw to be accurately guided over a 1.6mm guide wire. This ensures a precise trajectory—a critical requirement for percutaneous applications or when navigating complex anatomical corridors where "skating" off the bone surface must be avoided. The partially threaded configuration is specifically engineered to create a "lag effect," providing interfragmentary compression as the distal threads engage the far fragment while the smooth proximal shaft glides through the near fragment.

Key Specifications

• Manufacturer: Synthes (DePuy Synthes)

• Model / REF: 214.556

• Material: 316L Surgical Stainless Steel

• Diameter: 4.5 mm

• Overall Length: 56 mm

• Thread Type: Partially Threaded (approx. 1/3 length)

• 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

• Optimized Lag Compression: The 56mm length combined with a partial thread ensures that the threads reside entirely in the far bone fragment for most medium-bone applications. As the screw is tightened, the 6.5mm head draws the near cortex toward the far fragment, creating high-tension compression across the fracture line.

• Guided Accuracy: The internal cannulation facilitates percutaneous or open placement over a guide wire. This allows the surgeon to verify wire position via fluoroscopy before the screw is seated, reducing operative time and technical error.

• Self-Drilling & Self-Tapping: The distal tip is engineered with cutting flutes that eliminate the need for separate drilling and tapping steps in most cancellous bone applications, preserving bone stock and streamlining the surgical workflow.

• High-Torque Hex Drive: The 3.5mm hexagonal socket provides a robust interface for high-torque insertion into dense bone without the risk of head stripping or "cam-out."

• 316L Stainless Steel Biocompatibility: Forged from cold-worked surgical steel, the 214.556 is biologically inert and offers the high fatigue resistance required for early functional mobilization.

Applications

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

• Metatarsal Fixation: Stabilization of Jones fractures (base of the 5th metatarsal) or proximal metatarsal osteotomies.

• Hand & Wrist: Stabilization of carpal fusions or distal radius fragments where a 3.5mm screw lacks sufficient shear strength.

• Pediatric Orthopedics: Precise fixation of epiphyseal fractures (Salter-Harris types) where guided placement is essential to avoid growth plate damage.

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 in 2026.

• 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 56mm shaft remains perfectly aligned and the sterile pouch remains uncompromised.

• Fast Dispatch: Ships within 1 business day.