4.5 Plus CoCrMo Spinal Fixation System

Product Overview

The 4.5 Plus CoCrMo Spinal Pedicle Screw System is a high-performance posterior spinal fixation system manufactured from premium Cobalt-Chromium-Molybdenum (CoCrMo) alloy, offering excellent mechanical strength, fatigue resistance, and long-term stability. Designed for spinal deformity correction, fusion, and reconstruction procedures, the system includes monoaxial and polyaxial pedicle screws, CoCrMo rods, and locking components. The optimized 4.5mm diameter design provides reliable fixation strength while reducing implant profile, making it particularly suitable for pediatric spinal deformity correction and patients with smaller anatomical structures.

Indications

The 4.5 Plus CoCrMo Spinal Pedicle Screw System is designed for posterior spinal fixation and fusion procedures, including:

Pediatric Spinal Deformity Correction

• Adolescent idiopathic scoliosis (AIS)

• Congenital scoliosis

• Neuromuscular scoliosis

• Pediatric spinal curvature correction

Spinal Trauma and Fracture Stabilization

• Thoracolumbar compression fractures

• Burst fractures

• Traumatic spinal instability

Degenerative Spinal Conditions

• Degenerative disc disease

• Lumbar spinal stenosis

• Segmental instability

• Spondylolisthesis

Complex Spinal Reconstruction

• Posterior spinal fusion

• Revision spinal surgery

• Multi-level spinal stabilization

Key Advantages

High-Strength CoCrMo Alloy

Manufactured from cobalt-chromium-molybdenum alloy, providing:

• Superior mechanical strength

• Excellent fatigue resistance

• High wear resistance

• Long-term implant stability

Optimized 4.5mm Screw Diameter

• Designed for pediatric and small anatomy applications

• Provides effective correction force

• Minimizes implant prominence

• Suitable for spinal deformity correction procedures

Low-Notch Screw Head Design

• Reduces stress concentration

• Improves structural reliability

• Enhances resistance to mechanical failure

Monoaxial and Polyaxial Screw Options

Monoaxial Pedicle Screw

• Provides strong directional control

• Suitable for demanding correction procedures

• Improves construct stability

Polyaxial Pedicle Screw

• Allows multi-angle rod connection

• Facilitates intraoperative adjustment

• Improves surgical flexibility

Dual Thread Design

• Optimized thread profile for efficient insertion

• Provides strong bone purchase

• Helps reduce surgical operation time

Complete Spinal Fixation Solution

The system includes:

• Pedicle screws

• CoCrMo rods

• Locking plugs

• Compatible surgical instruments

Size Parameters

Size Range

Detailed Size Table

Monoaxial Pedicle Screw (Dual Thread)

Polyaxial Pedicle Screw

CoCrMo Rod

Locking Plug

Recommended Instruments

The following instruments are recommended for implantation and surgical procedures:

Pedicle Screw Instrument Set

• Pedicle probe

• Awl

• Tap

• Screwdriver

• Rod holder

• Counter torque instrument

Rod Preparation Instruments

• Rod bender

• Rod cutter

• Rod reducer

Spinal Correction Instruments

• Reduction tower

• Compression forceps

• Distraction forceps

• Derotation instruments

Navigation Instruments

• Pedicle locator

• Depth gauge

• Guide wire system

Frequently Asked Questions About 4.5 Plus CoCrMo Spinal Pedicle Screw

What is the 4.5 Plus CoCrMo Spinal Pedicle Screw System?

The 4.5 Plus CoCrMo Spinal Pedicle Screw System is a high-performance posterior spinal fixation system designed for spinal fusion, deformity correction, and reconstruction procedures.
It is manufactured from premium Cobalt-Chromium-Molybdenum (CoCrMo) alloy, providing excellent mechanical strength, fatigue resistance, and long-term implant stability.
The system includes monoaxial pedicle screws, polyaxial pedicle screws, CoCrMo rods, and locking components to support various spinal fixation applications.

What are the advantages of CoCrMo material in spinal pedicle screws?

CoCrMo alloy offers superior mechanical properties compared with traditional implant materials.
The high strength cobalt chromium alloy provides excellent fatigue resistance, corrosion resistance, and durability during long-term spinal stabilization.
These characteristics make CoCrMo spinal implants suitable for demanding applications such as spinal deformity correction, posterior spinal fusion, and complex spinal reconstruction.

What surgical procedures can use the 4.5 Plus CoCrMo Spinal Pedicle Screw?

The 4.5 Plus CoCrMo Spinal Pedicle Screw is designed for posterior spinal fixation and fusion procedures.
Typical applications include adolescent idiopathic scoliosis (AIS), congenital scoliosis, neuromuscular scoliosis, thoracolumbar fracture stabilization, degenerative spinal disorders, and spinal instability.
It can also be used in complex spinal reconstruction and revision surgery requiring reliable pedicle fixation.

Is the 4.5 Plus CoCrMo Spinal Pedicle Screw suitable for pediatric spinal deformity correction?

Yes. The 4.5mm diameter spinal pedicle screw design is particularly suitable for pediatric patients and small anatomical structures.
It provides sufficient corrective force while maintaining a lower implant profile, making it an effective solution for pediatric scoliosis correction and spinal deformity management.

What is the difference between monoaxial and polyaxial pedicle screws?

How does a monoaxial pedicle screw work?

A monoaxial pedicle screw provides a fixed screw head orientation, offering enhanced directional control and construct rigidity.
It is commonly used in procedures requiring strong corrective forces and precise spinal alignment control.

What are the benefits of a polyaxial pedicle screw?

A polyaxial pedicle screw allows multi-directional movement between the screw head and rod connection.
This flexibility simplifies rod placement, improves intraoperative adjustment, and helps surgeons achieve optimal spinal alignment during fixation procedures.

What sizes are available for the 4.5 Plus CoCrMo Spinal Pedicle Screw System?

The system provides multiple diameter and length options to meet different clinical requirements.
Pedicle screw diameters range from 4.0mm to 5.5mm, with lengths available from 30mm to 40mm.
The CoCrMo rod diameter is 4.5mm, with length options ranging from 40mm to 500mm, supporting various posterior spinal fixation configurations.

What design features improve the performance of this spinal fixation system?

The 4.5 Plus CoCrMo Spinal Pedicle Screw features a low-notch screw head design, optimized thread profile, and high-strength structure.
The dual thread design improves insertion efficiency and provides strong bone purchase.
These design features contribute to improved fixation stability, reduced stress concentration, and enhanced mechanical performance.

How does the low-notch screw head design benefit spinal fixation?

The low-notch design minimizes stress concentration around the screw head area while maintaining structural strength.
It helps reduce the risk of mechanical failure and provides a more reliable spinal implant solution for long-term stabilization.

Can the 4.5 Plus CoCrMo Spinal Pedicle Screw be used for minimally invasive spinal surgery?

Yes. The 4.5 Plus CoCrMo Spinal Pedicle Screw System can be integrated with compatible minimally invasive spinal surgery instruments and techniques.
Its optimized design supports efficient implantation while maintaining reliable posterior spinal fixation performance.

What instruments are required for implantation of the CoCrMo spinal pedicle screw system?

The recommended surgical instruments include pedicle probes, awls, taps, screwdrivers, rod holders, counter torque instruments, rod benders, rod cutters, and reduction instruments.
A complete spinal fixation instrument set helps surgeons achieve accurate screw placement and efficient surgical workflow.

How does the 4.5 Plus CoCrMo Spinal Pedicle Screw improve spinal stability?

The system provides strong pedicle anchorage through optimized screw thread geometry and high-strength CoCrMo material.
The combination of rigid fixation components and reliable rod connection helps maintain spinal alignment and support bone fusion during the healing process.

What is the difference between CoCrMo spinal screws and titanium spinal screws?

CoCrMo spinal screws generally provide higher mechanical strength and fatigue resistance compared with titanium alloy screws.
Titanium implants offer excellent biocompatibility and are widely used in spinal surgery, while CoCrMo implants are preferred in applications requiring enhanced mechanical performance and rigidity.

Can the 4.5 Plus CoCrMo Spinal Pedicle Screw System be customized?

Yes. Professional orthopedic implant manufacturers can provide OEM and ODM customization services for the CoCrMo spinal fixation system.
Customization options may include screw diameter, screw length, implant configuration, surgical instruments, packaging, and private labeling solutions according to customer requirements.

Why choose a professional CoCrMo spinal implant manufacturer?

Working with an experienced spinal implant manufacturer ensures consistent product quality, advanced manufacturing technology, and compliance with international medical device standards.
A reliable manufacturer can provide complete solutions including spinal pedicle screws, rods, fixation systems, surgical instruments, and customized orthopedic implant services for global distributors and healthcare providers.