The 4.0mm Cannulated Cancellous Screw is an orthopedic fixation screw for medium-fragment fractures and selected foot osteotomies and arthrodeses. Available in titanium and stainless steel, it accepts a 1.2mm guide wire and uses a standard 2.5mm hexagonal drive.

Real-World Performance & Utility

The cannulated shaft allows insertion over a 1.2mm guide wire, guiding the screw along the selected trajectory. Its 2.5mm hexagonal drive provides compatibility with a matching driver.

The hemispherical head supports annular contact with washers and plates when the screw is angled. A low-profile head helps reduce the possibility of soft tissue irritation around the fixation site.

Thread length matters when interfragmentary compression is required. Selecting a threaded portion that fits within the far bone fragment supports compression across the fracture. Fully threaded screws are intended for stabilization where little or no compression is needed.

Deep cancellous cutting threads with a large pitch increase resistance to pullout. The large pitch also supports faster insertion and removal.

Listed applications include tarsal and metatarsal fractures, metatarsal and phalangeal osteotomies, tarsometatarsal and metatarsophalangeal arthrodeses, ligament fixation, and hallux valgus correction.

Technical Specifications & Core Capabilities

• Screw diameter: 4.0mm.
• Guide wire compatibility: 1.2mm.
• Drive size: Standard 2.5mm hexagonal drive.
• Materials: Titanium and stainless steel.
• Head geometry: Hemispherical head for annular contact with washers and plates during angled placement.
• Head profile: Low profile to help reduce soft tissue irritation.
• Thread profile: Deep cancellous cutting threads with a large pitch.
• Short-thread proportion: Described in the supplied specifications as one-third of the screw length.
• Long-thread proportion: Described in the supplied specifications as one-half of the screw length.
• Screenshot configurations: Short thread self-tapping and full thread self-tapping.
• Catalogue screw lengths: 10–50mm in 2mm increments, followed by 55, 60, 65 and 70mm.
• Fully threaded screw purpose: Stabilization where little or no compression across the fracture site is required.
• Listed indications: Tarsal and metatarsal fractures; metatarsal and phalangeal osteotomies; tarsometatarsal and metatarsophalangeal arthrodeses; ligament fixation; hallux valgus correction.