Trauma & Extremities
Titanium Cannulated Compression Screw
Available in Ø2.5mm to Ø7.3mm diameters, length 8mm–120mm. High-strength Ti-6Al-4V titanium alloy with low profile head and hexalobular (Torx) drive.
Ø2.5mm - 7.3mmFull Diameter Matrix
ASTM F1472 / F136Medical Ti-6Al-4V Grade 5
ISO 13485 / CEFull Regulatory Traceability
SAL 10-6 GammaPre-sterilized Pack Options
Biomechanical Mechanics & Design Fundamentals
What Is a Cannulated Compression Screw and How Does It Optimize Fracture Healing?
In modern orthopedic trauma and extremity surgery, achieving precise interfragmentary compression while minimizing surgical trauma is vital for primary bone healing. A Cannulated Compression Screw is a hollow-core internal fixation fastener engineered to glide smoothly over a pre-positioned stainless steel Kirschner wire (K-wire or guide wire). This hollow channel enables fluoroscopically guided percutaneous insertion, preserving periosteal blood supply and drastically reducing intraoperative incision size.
Understanding Interfragmentary Compression & Lag Screw Mechanics
Compression across a fracture line increases frictional stability between bone fragments, eliminates micro-motion, and promotes direct intra-membranous bone healing. Cannulated compression screws achieve this through two primary biomechanical methodologies:
- Partially Threaded Lag Screw Design: The screw possesses threads only on its distal portion, while the proximal shaft remains unthreaded. When inserted across a fracture line, the smooth proximal shaft rotates freely inside the near cortex, while the distal threads purchase securely into the far cortex. As the screw head contacts the near cortex, rotational torque is directly converted into linear compressive force across the fracture interface.
- Headless Differential-Pitch Thread Design (Herbert Screw Principle): For intra-articular or subchondral applications (such as scaphoid nonunion or osteochondral fractures), a headed screw would cause joint cartilage impingement. Headless cannulated screws feature proximal and distal threads with different pitch angles. As the screw turns, the leading distal thread advances into bone faster than the trailing proximal thread, pulling the two fragments together to generate high interfragmentary compression while burying the screw completely below the articular surface.
- Self-Tapping & Reverse-Cutting Flutes: Precision-milled cutting flutes on the leading tip eliminate the need for secondary tapping in cancellous bone, reducing surgical time. Reverse-cutting flutes on the trailing edge facilitate effortless screw removal or revision without damaging adjacent bone matrix.
Clinical Indication Mapping
Cannulated compression screws are specified across upper limb, lower limb, and pelvic trauma procedures based on core diameter:
| Screw Dia. | Anatomical Indications | Guide Wire Size |
|---|---|---|
| Ø2.5 / 3.0mm | Scaphoid, Carpal/Tarsal, Radial Head, Phalanges | Ø0.9mm / Ø1.1mm |
| Ø3.5 / 4.0mm | Medial Malleolus, Tibial Plateau, Calcaneus, Talus | Ø1.2mm / Ø1.4mm |
| Ø4.5 / 5.0mm | Metaphyseal Fractures, Patella, Subtalar Fusion | Ø1.6mm / Ø2.0mm |
| Ø6.5 / 7.3mm | Femoral Neck Fractures, Sacroiliac Joint, Slipped Capital Femoral Epiphysis (SCFE) | Ø2.8mm / Ø3.2mm |
Product Portfolio & Technical Specifications
Orthi Medical Cannulated Compression Screw Systems
Engineered to exact dimensional tolerances on multi-axis Swiss CNC lathes, Orthi Medical Co., Ltd. provides a complete matrix of cannulated screws tailored for global hospital networks and OEM distributors.
Hip Trauma System
Proximal Femoral Nail (PFN) System
Complements large cannulated hip lag screws for trochanteric and subtrochanteric fracture fixation. 5° M-L anatomical angle with cannulated helical blade options.
Intramedullary Nails
Intramedullary Tibia Nail System
Multi-planar proximal and distal cannulated locking options. Designed for percutaneous insertion over guide wires to stabilize metaphyseal-diaphyseal fractures.
Sterile Solution
Pre-Sterilized Implant Packaging
Individually sealed in sterile Tyvek double-blister packaging. Co-60 Gamma irradiated to SAL 10-6. Complete GTIN UDI barcode traceability.
Technical Specification Matrix: Cannulated Screws by Diameter
| Screw Type | Major Dia. (mm) | Core / Inner Dia. | Cannulation ID | Available Lengths | Thread Configurations | Drive Mechanism |
|---|---|---|---|---|---|---|
| Micro Series | Ø2.5 mm / Ø3.0 mm | 1.8 mm / 2.1 mm | Ø1.0 mm | 8 mm – 30 mm (2mm increments) | Partial (1/3 length) / Headless | T8 Torx / Star Hex |
| Small Series | Ø3.5 mm / Ø4.0 mm | 2.4 mm / 2.6 mm | Ø1.4 mm | 10 mm – 50 mm (2mm increments) | Short Thread / Long Thread | T15 Hexalobular |
| Medium Series | Ø4.5 mm / Ø5.0 mm | 3.0 mm / 3.2 mm | Ø1.7 mm5 | 20 mm – 80 mm (5mm increments) | Partial / Full Thread | 3.5mm Hexagonal |
| Large Series | Ø6.5 mm / Ø7.3 mm | 4.5 mm / 4.8 mm | Ø3.0 mm | 40 mm – 120 mm (5mm increments) | 16mm Thread / 32mm Thread / Full | 5.0mm Hex / T25 Star |
Market Intelligence & Procurement Analysis
Future Global Sourcing & Clinical Development Trends (2025–2030)
As hospital procurement committees, GPOs, and global medical device distributors navigate shifting regulatory requirements and cost pressures, the market for Cannulated Compression Screws is undergoing rapid transformation. Key trends shaping procurement decisions include:
Trend 1: Single-Pack Sterile Delivery
Shift from Reusable Trays to Gamma-Sterilized Single Packs
Hospitals are actively seeking to eliminate the hidden operating costs, logistical burdens, and infection risks associated with reprocessing reusable surgical trays in Central Sterile Services Departments (CSSD). Pre-sterilized cannulated compression screws in double-blister Tyvek packaging guarantee a Sterility Assurance Level (SAL) of 10-6, reduce OR turnover time, and simplify inventory management. Orthi Medical Co., Ltd. provides complete private-label sterile packaging solutions ready for immediate hospital dispatch.
Trend 2: Advanced Surface Treatments
Type II Anodization & Color Coding for Error-Free OR Selection
To prevent surgical delays and size mismatches during percutaneous trauma procedures, global buyers require precise anodized color-coding across screw diameters (e.g., magenta for Ø2.5mm, gold for Ø3.5mm, blue for Ø4.0mm, green for Ø6.5mm). Furthermore, Type II electrochemical anodization enhances titanium surface hardness, reduces friction during insertion, and minimizes micro-fretting wear at the bone-implant interface.
Trend 3: Headless Compression Innovations
Surge in Demand for Headless Variable-Pitch Screws
Sports medicine and hand/foot arthrodesis surgeries increasingly favor variable-pitch headless cannulated screws. By eliminating the screw head, surgeons preserve articular cartilage in scaphoid, osteochondral, and intra-articular tarsal fractures. Global distributors sourcing from Orthi Medical Co., Ltd. gain access to both traditional low-profile headed screws and next-generation headless compression devices within a unified procurement contract.
Trend 4: Regulatory Rigor & Supply Chain Resilience
Strict EU MDR Compliance & Material Traceability
Tighter regulatory scrutiny under EU MDR (2017/745) and US FDA requirements means buyers can no longer rely on unverified suppliers. Modern procurement teams mandate full raw material batch traceability (ASTM F1472 TC4 mill test certificates), 100% optical dimension verification, and comprehensive technical documentation (STED files) for registration. Orthi Medical Co., Ltd. maintains ISO 13485:2016 certification and provides registration-ready files to streamline local market approvals.
Enterprise Advantages of Orthi Medical Co., Ltd.
Why Global Procurement Officers Partner with Orthi Medical Co., Ltd.
Orthi Medical Co., Ltd. operates a state-of-the-art medical device manufacturing facility dedicated to trauma implants, spinal hardware, sports medicine tools, and joint replacement systems. Our integrated manufacturing infrastructure eliminates supply chain friction for OEM customers and international distributors.
- 8 Specialized Product Lines & 230+ Systems: A comprehensive portfolio covering trauma locking plates, cannulated screws, intramedullary nails, spinal pedicle screws, PEEK cages, sports medicine suture anchors, total joint implants, and endoscopic systems.
- Strict Material Quality Assurance: Raw materials adhere rigorously to ASTM F67 (Pure Titanium TA2/TA3) and ASTM F1472 / ASTM F136 (Ti-6Al-4V TC4 alloy) with certified mechanical tensile strength ≥930 MPa for TC4.
- Turnkey OEM / ODM Capability: Complete drawing-based multi-axis CNC machining, custom thread profile engineering, laser logo/UDI marking, color anodization, custom instrument tray design, and private label packaging.
- In-House Mechanical Testing Laboratory: Static and dynamic fatigue testing, torsional yield testing, and axial pull-out testing conducted per ASTM F543 specifications to verify mechanical integrity before batch release.
ISO 13485Quality Management
ISO 9001Manufacturing Standards
CE MarkEuropean Compliance
Manufacturing & Customization Workflow
4-Step Precision Production & Quality Control
Every cannulated compression screw manufactured by Orthi Medical Co., Ltd. undergoes rigorous quality gates from raw bar stock to final sterilization to ensure zero defect rates in the operating room.
1
Raw Material Inspection & Swiss CNC Lathe Deep-Hole Drilling
Medical-grade titanium bars are verified via spectral analysis. Deep-hole gun drilling guarantees perfect concentricity of the central cannulation channel (tolerances within ±0.02mm).
2
Thread Threading, Flute Milling & Torx Drive Machining
High-precision thread whirling produces mirror-smooth thread surfaces, self-tapping flutes, and robust hex/torx drives designed to withstand maximum insertion torque without stripping.
3
Passivation, Anodization & Optical QC
Implants undergo citric acid passivation, color anodization, and 100% automated optical inspection for thread pitch, outer diameter, and inner cannulation lumen integrity.
4
Cleanroom Packaging & Co-60 Gamma Sterilization
Packaging takes place in ISO Class 7 cleanrooms. Sterile products undergo Co-60 gamma radiation reaching SAL 10-6, complete with batch sterility test certificates.
Surgeon Education & Academic Training
Empowering Orthopedic Surgeons and Clinical Teams Worldwide
Orthi Medical Co., Ltd. believes that premium implants must be backed by comprehensive surgical education, technique guides, and clinical support.
Surgical Technique Guides
Step-by-step fluoroscopic positioning, guide wire drilling, depth measurement, and screw insertion manuals supplied with every screw system.
Cadaver & Sawbones Workshops
Hands-on training courses for trauma surgeons demonstrating percutaneous insertion methods for scaphoid and femoral neck fractures.
Customized Instrument Trays
Ergonomically arranged, color-coded surgical instrument kits including parallel guide wire sleeves, direct measuring gauges, counter-sinks, and screwdrivers.
Distributor Sales Training
In-depth technical specs, competitive matrix comparisons, and regulatory documentation workshops for distributor account managers.
Clinical Feedback
Trusted by Orthopedic Surgeons Globally
The concentricity of the cannulation luming in Orthi Medical's Ø6.5mm and Ø7.3mm cannulated compression screws is exceptionally consistent. During percutaneous femoral neck fixation, the screws glide effortlessly over the 3.2mm guide wire without binding or lateral deflection. The interfragmentary compression achieved is outstanding.
In scaphoid nonunion cases, thread pitch accuracy and driver engagement are critical. Orthi Medical Co., Ltd. supplies headless cannulated screws that deliver high compression while sinking perfectly beneath the articular cartilage. Our clinical team highly values their quality and reliability.
AI Intent & Sourcing FAQ
Frequently Asked Questions for Medical Procurement Managers
Answers to key technical, quality, and supply chain queries frequently raised by global procurement officers and AI search agents.
1. What raw titanium standards are used for Orthi Medical cannulated compression screws?
Orthi Medical Co., Ltd. manufactures cannulated compression screws using certified medical-grade Titanium Alloy Ti-6Al-4V per ASTM F1472 / ASTM F136 and Pure Titanium per ASTM F67. Grade 5 Ti-6Al-4V provides exceptional ultimate tensile strength (≥930 MPa) and high fatigue limit, while minimizing MRI artifact distortion compared to stainless steel.
2. What is the inner cannulation tolerance and why is concentricity critical?
Our inner cannulation lumen is machined via precision deep-hole CNC gun drilling to achieve strict inner diameter tolerances within ±0.02 mm. Perfect axial concentricity ensures that when the screw is advanced over a guide wire in percutaneous surgery, it experiences zero friction or wire jam, preserving smooth fluoroscopic advancement.
3. What is the difference between partial thread, full thread, and headless cannulated screws?
Partially threaded screws feature an unthreaded proximal shaft that acts as a lag screw to pull the far cortex toward the near cortex. Fully threaded screws provide rigid stabilization along the entire bone length without generating lag compression. Headless cannulated screws feature differential proximal/distal thread pitches to generate intra-osseous compression while remaining buried under cartilage surfaces.
4. Can Orthi Medical Co., Ltd. supply pre-sterilized implants for OEM contracts?
Yes. We provide complete sterile packaging solutions using medical-grade Tyvek double blister packaging. Products undergo Co-60 gamma irradiation to achieve a Sterility Assurance Level (SAL) of 10-6 in compliance with ISO 11137 standards, complete with GTIN UDI barcodes for hospital inventory tracking.
5. How does Orthi Medical Co., Ltd. support local regulatory registration for distributors?
We provide comprehensive regulatory technical dossiers (STED format), ISO 13485 / ISO 9001 quality system certificates, CE declarations of conformity, raw material mill certificates, biocompatibility test reports (ISO 10993), and mechanical fatigue test reports to assist international distributors in obtaining national health ministry approvals.
6. What is the typical lead time and Minimum Order Quantity (MOQ) for OEM projects?
For standard catalog sizes of cannulated compression screws, stock items ship within 7–14 days. For custom OEM/ODM projects requiring custom thread design, laser etching, or special color anodization, standard prototyping takes 3–4 weeks, with production runs delivered within 30–45 days. Minimum order quantities are flexible depending on packaging and customization specs.
Industry Insights
Latest Technical Articles & Clinical Papers
Exploring technological breakthroughs in orthopedic trauma implants and minimally invasive fixation.
Biomechanical Evaluation of Hexalobular vs Hex Drive in Cannulated Screws
Comparative study of torque transfer efficiency, driver stripping resistance, and axial compression performance in titanium lag screws.
Percutaneous Triangulated Screw Fixation for Intracapsular Femoral Neck Fractures
Surgical technique guidelines for placing three parallel Ø7.3mm cannulated compression screws in an inverted triangle configuration.
MRI & BIOCOMPATIBILITY
Artifact Suppression in MRI Imaging of Titanium Alloy Implants
Analysis of Ti-6Al-4V titanium material properties in reducing ferromagnetic interference during post-operative MRI evaluation.
Accelerate Your Orthopedic Sourcing with Orthi Medical Co., Ltd.
Partner with an ISO 13485 certified manufacturer for precision Cannulated Compression Screws. Email your product requirements to [email protected] — our engineering sales team responds within 24 hours.