The Poly Axial Spondylolisthesis Reduction Screw (5.0 mm) is a titanium spinal fixation implant designed for integration within compatible posterior spinal instrumentation and reduction systems according to the manufacturer’s approved indications and surgical technique.
The implant combines an elongated threaded bone-engagement shaft with a proximal polyaxial reduction-style fixation head. The polyaxial configuration permits controlled orientation of the head relative to the screw shaft within the mechanical limits of the system, while the reduction-style proximal geometry is designed to facilitate engagement and positioning of compatible spinal rods during construct assembly and reduction procedures.
According to the supplied catalog:
Material: Titanium
General Cat. No.: AMS 520.050.000
Nominal Diameter: 5.0 mm
The product is available in 12 lengths ranging from 25 mm to 80 mm, allowing implant selection according to vertebral anatomy, bone dimensions, required fixation depth, screw trajectory, rod position, reduction construct geometry, and intraoperative assessment.
Each configuration carries a dedicated Cat. No. and GTIN No., supporting accurate implant identification, product traceability, surgical set preparation, procurement, inventory management, and stock control.
Product Explanation
The Poly Axial Spondylolisthesis Reduction Screw (5.0 mm) is a posterior spinal fixation screw intended to function as part of a compatible reduction and rod-based stabilization construct.
A simplified construct can be represented as:
Vertebra → Polyaxial Reduction Screw → Compatible Spinal Rod → Locking Component → Posterior Spinal Fixation Construct
The threaded shaft provides mechanical bone engagement, while the polyaxial reduction head provides the interface for compatible rods and locking components.
The specific reduction technique, permissible reduction forces, and final locking sequence must follow the manufacturer’s approved surgical technique.
Product Components and Design
- Titanium Screw Body
The main structural component is manufactured from Titanium, according to the supplied product data.
- 5.0 MM Nominal Diameter
The catalog identifies the product as:
Poly Axial Spondylolisthesis Reduction Screw (5 mm)
indicating a nominal screw configuration of 5.0 mm.
- Threaded Bone-Engagement Shaft
The implant incorporates an elongated threaded shaft designed for mechanical engagement within vertebral bone.
The supplied catalog does not specify:
- Thread pitch
- Core diameter
- Thread depth
- Thread profile
- Self-tapping characteristics
- Polyaxial Head
The proximal fixation head is designed to permit controlled orientation relative to the screw shaft within the limits of the compatible system.
This can facilitate rod alignment during construct assembly.
- Reduction-Style Proximal Head
The product is specifically identified as a Spondylolisthesis Reduction Screw, and the supplied image shows an extended proximal head configuration associated with the reduction-style construct.
The exact:
- Reduction travel
- Reduction range
- Tab / extension removal mechanism
- Locking-cap design
- Permissible reduction force
are not specified in the supplied catalog.
- Distal Tip
The distal portion forms part of the threaded bone-engagement geometry.
- Length Configurations
Available lengths are:
25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 mm
Intended Use
The Poly Axial Spondylolisthesis Reduction Screw (5.0 mm) is intended for use within compatible posterior spinal fixation and reduction systems, according to the manufacturer’s approved indications and Instructions for Use.
Potential applications, where included within the approved indications, may include:
- Posterior spinal stabilization.
- Screw-and-rod fixation constructs.
- Reduction-type spinal fixation constructs.
- Spondylolisthesis-related stabilization procedures where specifically approved.
- Multi-level spinal instrumentation.
- Spinal reconstruction constructs.
- Spinal deformity fixation systems.
- Compatible posterior thoracic or lumbar fixation systems.
Selection of the appropriate screw depends on:
- Vertebral anatomy.
- Bone dimensions.
- Bone quality.
- Required fixation depth.
- Screw trajectory.
- Rod position.
- Reduction requirements.
- Construct geometry.
- Preoperative planning.
- Intraoperative assessment.
The implant should be selected and inserted by a qualified spine surgeon according to the approved surgical technique and IFU.
Key Benefits
Titanium Material
The supplied catalog specifies:
Material: Titanium
5.0 MM Reduction Screw Configuration
The implant is specifically identified as a:
Poly Axial Spondylolisthesis Reduction Screw (5.0 mm)
for compatible posterior spinal constructs.
Polyaxial Head Design
The polyaxial head permits controlled orientation relative to the screw shaft within the compatible system.
Reduction-Style Head Geometry
The proximal design provides a dedicated configuration for compatible spinal reduction constructs.
Wide Length Range
Available lengths extend from:
25 mm to 80 mm
Twelve Product Configurations
The family includes:
12 individual screw lengths
Regular 5 MM Progression
The lengths increase in:
5 mm increments
throughout the supplied range.
Threaded Bone-Engagement Design
The implant incorporates an elongated threaded shaft for vertebral bone engagement.
Product Traceability
Each configuration has an individual Cat. No. and GTIN No. to support:
- Implant identification.
- Product traceability.
- Surgical set preparation.
- Procurement.
- Inventory management.
- Stock control.
Technical Specifications
| Length | Cat. No. | GTIN No. |
| 25 mm | AMS 520.050.025T | 6221361020719 |
| 30 mm | AMS 520.050.030T | 6221361020740 |
| 35 mm | AMS 520.050.035T | 6221361020771 |
| 40 mm | AMS 520.050.040T | 6221361020801 |
| 45 mm | AMS 520.050.045T | 6221361020832 |
| 50 mm | AMS 520.050.050T | 6221361020863 |
| 55 mm | AMS 520.050.055T | 6221361020894 |
| 60 mm | AMS 520.050.060T | 6221361020924 |
| 65 mm | AMS 520.050.065T | 6221361020955 |
| 70 mm | AMS 520.050.070T | 6221361020986 |
| 75 mm | AMS 520.050.075T | 6221361021013 |
| 80 mm | AMS 520.050.080T | 6221361021044 |
Technical Overview
Product Name: Poly Axial Spondylolisthesis Reduction Screw (5.0 mm)
Material: Titanium
Product Type: Polyaxial Reduction Spinal Fixation Screw
Product Category: Posterior Spinal Internal Fixation Implant
General Cat. No.: AMS 520.050.000
Nominal Diameter: 5.0 mm
Available Lengths: 25–80 mm
Length Increment: 5 mm
Number of Configurations: 12
Design: Threaded Screw with Polyaxial Reduction-Style Head
Fixation Concept: Posterior Screw-and-Rod Reduction / Stabilization Construct
Anatomical Application: Spine
Identification: Individual Cat. No. and GTIN No. for each length
Product Features
- Poly Axial Spondylolisthesis Reduction Screw Design.
- Manufactured from Titanium according to the catalog.
- Nominal diameter: 5.0 mm.
- Threaded shaft for vertebral bone engagement.
- Polyaxial proximal fixation head.
- Reduction-style extended head configuration.
- Designed for compatible posterior spinal fixation systems.
- Available in 12 length configurations.
- Length range from 25 to 80 mm.
- Regular 5 mm increments.
- Supports different fixation-depth requirements.
- Provides rod-alignment capability within compatible system limits.
- Designed for integration with compatible rod and locking components.
- Individual Cat. No. for every length.
- Individual GTIN No. for every configuration.
- Supports implant identification, traceability, procurement, and inventory management.
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