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Advantages of titanium alloy bone plates
Excellent biocompatibility: Titanium alloys can blend well with human tissues, and a stable oxide film can form on their surface. There are almost no toxic or side effects between them and human tissues, and they are less likely to cause rejection reactions in the body, rarely leading to allergic and inflammatory reactions.
Excellent mechanical properties
High strength: It can withstand considerable pressure and load, providing effective support for bones. Its strength is close to that of stainless steel and can meet the mechanical requirements for fracture fixation.
Elastic modulus matching: The elastic modulus is closer to that of human bones. Compared with other metal materials, it can effectively reduce the “stress shielding effect”, promote the natural growth and healing of bones, and avoid bone atrophy caused by stress shielding.
Strong corrosion resistance: It has excellent corrosion resistance in physiological environments. Even when exposed to body fluids containing chloride ions in the human body (such as blood and saliva), the oxide film on its surface can remain stable, thereby extending the service life of the implant. It is not easily corroded in the internal environment and can maintain stable performance.
Good X-ray transmittance: It has a high X-ray transmittance, which is conducive to doctors observing the surrounding tissues of the implant through imaging examinations after surgery, facilitating postoperative follow-up and evaluation.
Strong plasticity: It can be cut to any size as needed, has a strong fit with the bone surface at the fracture site, and the multi-wing design makes it convenient to fix the fracture fragment at multiple points. Moreover, the titanium plate wall is relatively thin, which can relatively reduce the tension at the incision and the chance of infection.
The application scope of titanium alloy bone plates
Long bone fractures: It is often used for fractures of the main bones or metaphyseal ends of long bones such as the femur, tibia, and humerus. Through screw fixation, the bone force line can be restored and displacement prevented. It is especially suitable for cases that require early functional exercise, such as bed joint movement the day after the operation for femoral shaft fractures.
Intra-articular fractures: For fractures involving weight-bearing joints such as the knee and ankle joints, anatomical titanium alloy bone plates can precisely fit the bone surface. Clinical data shows that after tibial plateau fractures are fixed with locking titanium alloy bone plates, the proportion of articular surface steps less than 2mm reaches 85%, significantly reducing the incidence of traumatic arthritis.
Comminuted fractures: Complex fractures involving multiple segments or more than three bone pieces often require bridging titanium alloy bone plates for fixation. The elastic modulus of titanium alloy materials is close to that of human bones, which can effectively distribute stress and prevent bone resorbtion caused by stress shielding effects. The bone healing rate can reach over 90% one year after the operation.
Open fractures: In Gustilo type II-III open fractures, after thorough debridement, internal fixation with titanium alloy bone plates can maintain bone structure stability. Its corrosion resistance reduces the risk of infection. Combined with negative pressure closed drainage technology, the success rate of infection control is increased to about 78%.
Osteoporotic fractures: The locking titanium alloy bone plate design enhances the holding force through an angle-forming stability screw system. It is suitable for vertebral or distal radius fractures with a bone density T value less than -2.5. Biomechanical tests show that its pull-out strength is 40% higher than that of ordinary bone plates, and the postoperative screw loosening rate is only 5%.
Intra-articular fractures of the calcaneus: Titanium alloy plates have the same mechanical strength as normal calcaneus and have become the mainstream material for calcaneal internal fixation. When treating calcaneal fractures, choosing the appropriate surgical timing and combining “L” -shaped incision reduction with titanium plate internal fixation can achieve satisfactory therapeutic effects.