The Poly Axial Spondylolisthesis Reduction Screw (6.5 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 allows controlled orientation of the head relative to the screw shaft within the mechanical limits of the fixation system, while the extended reduction-style proximal geometry is designed to facilitate engagement, alignment, and positioning of compatible spinal rods during reduction and construct assembly.
According to the supplied catalog:
Material: Titanium
General Cat. No.: AMS 520.065.000
Nominal Diameter: 6.5 mm
The product is available in 12 length configurations ranging from 25 mm to 80 mm, providing multiple implant-selection options according to vertebral anatomy, bone dimensions, fixation depth, screw trajectory, rod position, reduction requirements, and overall spinal construct geometry.
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 (6.5 mm) is a posterior spinal fixation screw intended to function within a compatible reduction and rod-based stabilization construct.
A simplified fixation concept can be represented as:
Vertebra → Polyaxial Reduction Screw → Compatible Spinal Rod → Locking Component → Posterior Spinal Fixation Construct
The threaded shaft provides mechanical engagement with vertebral bone, while the polyaxial reduction head provides the connection interface for compatible spinal rods and locking elements.
The precise reduction technique, rod-reduction sequence, locking procedure, and permissible forces must follow the manufacturer’s approved Surgical Technique and Instructions for Use.
Product Components and Design
- Titanium Screw Body
The primary implant structure is manufactured from Titanium, according to the supplied product data.
- 6.5 MM Nominal Diameter
The catalog identifies the product as:
Poly Axial Spondylolisthesis Reduction Screw (6.5 mm)
indicating a nominal screw configuration of 6.5 mm.
- Threaded Bone-Engagement Shaft
The implant incorporates an elongated threaded shaft intended for mechanical engagement within vertebral bone.
The supplied catalog does not specify:
- Thread pitch
- Core diameter
- Thread depth
- Thread profile
- Self-tapping characteristics
- Polyaxial Fixation Head
The proximal head is designed to permit controlled orientation relative to the screw shaft within the limits of the compatible spinal fixation system.
This configuration can facilitate alignment with the spinal rod during construct assembly.
- Reduction-Style Extended Head
The product is specifically identified as a Spondylolisthesis Reduction Screw and features an extended proximal head configuration associated with compatible reduction constructs.
The supplied catalog does not specify:
- Reduction travel
- Reduction range
- Extension-tab release mechanism
- Maximum permissible reduction force
- Final locking sequence
- Distal Tip
The distal portion forms part of the screw’s 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 (6.5 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 posterior spinal constructs.
- Spondylolisthesis-related stabilization where specifically approved.
- Multi-level spinal instrumentation.
- Spinal reconstruction procedures.
- Spinal deformity fixation constructs.
- Compatible posterior thoracic or lumbar fixation systems.
Selection of the appropriate screw configuration depends on:
- Vertebral anatomy.
- Bone dimensions.
- Bone quality.
- Fixation level.
- Required screw 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
6.5 MM Reduction Screw Configuration
The implant is specifically identified as a:
Poly Axial Spondylolisthesis Reduction Screw (6.5 mm)
for compatible posterior spinal fixation constructs.
Polyaxial Head Configuration
The polyaxial head permits controlled orientation relative to the screw shaft within compatible system limits.
Reduction-Style Head Geometry
The extended proximal configuration is designed for integration into compatible spinal reduction constructs.
Wide Length Range
Available lengths extend from:
25 mm to 80 mm
Twelve Product Configurations
The product family includes:
12 individual screw lengths
Regular 5 MM Progression
The available lengths progress in regular:
5 mm increments
Threaded Bone-Engagement Shaft
The screw incorporates an elongated threaded geometry for mechanical vertebral bone fixation.
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 520.065.025T | 6221361021792 |
| 30 mm | AMS 520.065.030T | 6221361021822 |
| 35 mm | AMS 520.065.035T | 6221361021853 |
| 40 mm | AMS 520.065.040T | 6221361021884 |
| 45 mm | AMS 520.065.045T | 6221361021914 |
| 50 mm | AMS 520.065.050T | 6221361021945 |
| 55 mm | AMS 520.065.055T | 6221361021976 |
| 60 mm | AMS 520.065.060T | 6221361022003 |
| 65 mm | AMS 520.065.065T | 6221361022034 |
| 70 mm | AMS 520.065.070T | 6221361022065 |
| 75 mm | AMS 520.065.075T | 6221361022096 |
| 80 mm | AMS 520.065.080T | 6221361022126 |
Technical Overview
Product Name: Poly Axial Spondylolisthesis Reduction Screw (6.5 mm)
Material: Titanium
Product Type: Polyaxial Reduction Spinal Fixation Screw
Product Category: Posterior Spinal Internal Fixation Implant
General Cat. No.: AMS 520.065.000
Nominal Diameter: 6.5 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: 6.5 mm.
- Threaded shaft for vertebral bone engagement.
- Polyaxial proximal fixation head.
- Extended reduction-style 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.
- Supports rod alignment within compatible system limits.
- Designed for integration with compatible rods and locking components.
- Individual Cat. No. for every screw length.
- Individual GTIN No. for every configuration.
- Supports implant identification, traceability, procurement, and inventory management.
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