Orthi Medical delivers precision-machined locking screws, intramedullary nails, trauma plates, and specialized surgical sets engineered to ISO 13485 and CE standards.
A complete biomechanical, metallurgical, and regulatory guide for hospital procurement managers, medical device brand owners, and OEM implant distributors worldwide.
Information Gain Executive Summary: Modern orthopedic fracture repair relies on angular-stable construct mechanics. Unlike conventional cortical screws that depend on bone-plate friction, orthopedic locking screws thread directly into the bone plate, creating a fixed-angle construct. This technical whitepaper explores metallurgical standards (ASTM F136 vs. ASTM F67 vs. ASTM F138), micro-machining tolerances, thread pitch geometry, and global OEM contract manufacturing protocols.
In modern traumatology, the evolution from dynamic compression plating (DCP) to locking compression plating (LCP) represents a paradigm shift in internal fixation. Standard cortical screws rely entirely on friction generated between the plate and the underlying periosteum. In osteoporotic bone or complex comminuted fractures, traditional screws risk toggle, loosening, and loss of reduction due to inadequate pullout strength.
Conversely, medical locking screws feature a threaded head that engages mating threads within the plate hole. This mechanical lock transforms the screw-plate assembly into a rigid, fixed-angle construct. Biomechanically, load distribution transitions from compressive friction to shear force transfer along the screw shaft. This reduces the risk of primary dynamic failure, prevents periosteal stripping, and preserves vascular supply beneath the plate—critical factors for primary bone healing.
| Material Specification | Standard Reference | Tensile Strength (MPa) | Yield Strength (MPa) | Biocompatibility & Clinical Application |
|---|---|---|---|---|
| Ti-6Al-4V ELI (Grade 23) | ASTM F136 / ISO 5832-3 | ≥ 860 - 930 | ≥ 795 - 860 | High fatigue strength; ideal for load-bearing trauma locking screws & IM nails. |
| Pure Titanium (TA2 / Grade 2) | ASTM F67 / ISO 5832-2 | ≥ 345 | ≥ 275 - 450 | Excellent ductility; suitable for malleable low-profile rib & cranial plates. |
| Pure Titanium (TA3 / Grade 3) | ASTM F67 / ISO 5832-2 | ≥ 450 | ≥ 380 - 550 | Balanced strength & contourability; utilized in small-fragment locking constructs. |
| Stainless Steel 316LVM | ASTM F138 / ISO 5832-1 | ≥ 860 - 1100 | ≥ 690 - 890 | High modulus of elasticity; economical trauma screws, veterinary implants & PFNA sets. |
Manufacturing high-performance locking screws requires sub-micron level CNC accuracy. Screw thread geometry directly impacts insertion torque, pullout resistance, and mechanical engagement with bone tissue. At Orthi Medical, our multi-axis CNC Swiss machining centers adhere to strict design metrics:
Recessed Star/Torx drive heads optimized to eliminate cam-out, maximize torque transmission efficiency, and reduce driver bit stripping during intraoperative insertion.
Advanced double-lead geometries cut insertion time by 50%, providing smooth cortical biting while maintaining maximum axial pullout resistance.
Engineered self-tapping cutting flutes clear bone debris efficiently during advancement, eliminating the need for intraoperative tapping step and shortening surgical times.
Medical device sourcing managers face shifting regulatory demands, rising hospital purchasing standards, and supply chain consolidation. Key trends transforming the orthopedic fastener market include:
As a recognized orthopedic implant manufacturer, Orthi Medical Co., Ltd. brings decades of precision manufacturing, engineering excellence, and global compliance support.
Our state-of-the-art facility operates under strict ISO 13485 and ISO 9001 certified Quality Management Systems. Full production lot traceability guarantees compliance with international regulatory bodies.
We convert technical CAD/CAM drawings into finished products. Custom dimensions, unique thread pitches, surface anodization, laser marking, and dedicated surgical trays are tailored to your requirements.
Our automated cleanroom facilities provide double-blister sterile packaging, labeled with GS1 UDI-compliant barcodes, sterilized via Cobalt-60 gamma radiation for immediate operating room deployment.
Answers to common technical, material, and logistics queries from orthopedic brand owners, distributors, and procurement specialists.
Ready to streamline your orthopedic supply chain? Connect with our biomedical engineering and OEM contract manufacturing team today for custom quotes, technical drawings review, and sample requests.