Modular Straight Stem

Modular Straight Stem

Modular Femoral Straight Stem | Sizes 7–17.5 mm | Lengths 142–180 mm

The Modular Straight Stem is a straight femoral stem designed for use within Modular Hip Arthroplasty Systems. It is available in a graduated range of diameters and lengths to support appropriate implant size selection based on the patient’s bone anatomy and surgical planning requirements.

• 8 Stem Sizes, ranging from 7 mm to 17.5 mm.
• Graduated lengths from 142 mm to 180 mm, providing multiple options for different Femoral Canal dimensions.
• Modular Configuration allows the stem to be used with compatible components within the surgical system.
• A Dedicated Product Code is assigned to each size to facilitate identification, ordering, and Implant Inventory preparation.

The Modular Straight Stem is one of the components used within Modular Femoral Stem Systems for Hip Arthroplasty procedures. It features a Straight Stem Geometry and is available in a graduated range of diameters and lengths, providing multiple options during Preoperative Planning and intraoperative implant selection.

The stem range is designed to cover diameters from 7 mm to 17.5 mm, with lengths ranging from 142 mm to 180 mm. This graduated sizing provides suitable options for variations in Femoral Canal dimensions and anatomy between individual patients.

The product is based on the concept of Modularity, whereby the Straight Stem functions as part of an integrated and compatible surgical system. This provides the surgeon with additional options when configuring the Femoral Construct according to the clinical requirements of the case and the approved system components.

The range includes 8 Configurations, with each size assigned an individual AMS Product Code. This facilitates implant identification, inventory management, Surgical Set preparation, and verification of the correct implant size before and during surgery.

With its variety of Stem Diameters and Stem Lengths, the Modular Straight Stem provides a structured range of options that support Femoral Reconstruction requirements and allow selection of the appropriate Implant Dimension based on clinical assessment, radiographic evaluation, and the approved surgical technique.

What Is a Modular Straight Stem?

The Modular Straight Stem is a Femoral Implant Component inserted into the Femoral Canal as part of a modular system used in hip replacement or reconstruction procedures.

The stem represents the component that extends within the femur, while the Modular Design allows it to be combined with compatible system components to create the Implant Construct selected by the surgeon according to the requirements of the case.

Stem selection is based on several factors, including:

• Femoral Anatomy
• Canal Diameter
• Bone Morphology
• Required Stem Length
• Preoperative Templating
• Intraoperative Assessment
• The Surgical Technique of the system being used

Product Components and Design

1. Femoral Stem Body

The main body of the implant that extends within the Femoral Canal and is available in various diameters and lengths.

2. Proximal Modular Interface

The proximal portion of the stem designed to connect with compatible components within the Modular Femoral System.

3. Distal Stem Section

The portion extending distally into the femoral canal. Its dimensions and length vary according to the selected size.

4. Modular Connection

The connection interface that allows the stem to be combined with compatible components according to the approved Surgical Technique and the manufacturer’s instructions.

Technical Note: The manufacturing material, Surface Treatment, Coating, type of Fixation, and the mechanism of the Modular Connection are not specified in the provided product table. Therefore, the approved Technical Datasheet or IFU should be consulted before listing these characteristics as official product specifications on the website.

Product Applications

The Modular Straight Stem is used within Modular Hip Arthroplasty Systems as part of the Femoral Construct in surgical procedures requiring a femoral stem compatible with the system.

The availability of multiple sizes and lengths allows selection of the appropriate stem according to:

• Femoral Canal dimensions
• Patient bone anatomy
• Planning using Preoperative Templating
• Required level of Femoral Reconstruction
• Intraoperative Assessment
• Other components used within the Modular System

Final implant size selection and use must be determined by a Qualified Orthopedic Surgeon in accordance with the approved IFU and Surgical Technique for the product.

Key Benefits

Wide Size Range

The system provides a graduated range of stem diameters to accommodate variations in Femoral Canal dimensions.

Multiple Stem Lengths

Lengths ranging from 142 to 180 mm provide the surgical team with additional options during planning and implant selection.

Intraoperative Flexibility

The availability of multiple diameters and lengths provides greater flexibility in selecting the appropriate Configuration based on intraoperative findings.

Modular System Compatibility

The stem is designed for use as part of a Modular Femoral Construct with approved and compatible components within the system.

Clear Implant Identification

A separate Product Code for each size helps reduce identification errors and supports organized Inventory and Surgical Set management.

Structured Size Progression

The systematic progression of diameters and lengths makes it easier to compare available configurations and select the required implant size.

Technical Specifications

Product Code	Stem Diameter / Size	Stem Length
AMS 120.007.142	7 mm	142 mm
AMS 120.008.146	8 mm	146 mm
AMS 120.009.150	9 mm	150 mm
AMS 120.010.153	10 mm	153 mm
AMS 120.112.158	11.25 mm	158 mm
AMS 120.125.162	12.5 mm	162 mm
AMS 120.015.171	15 mm	171 mm
AMS 120.175.180	17.5 mm	180 mm

Technical Overview

Product Name: Modular Straight Stem
Product Category: Modular Femoral Stem
Design: Straight Stem
System Type: Modular Femoral System
Available Configurations: 8 Sizes
Stem Diameter Range: 7–17.5 mm
Stem Length Range: 142–180 mm
Identification: Individual AMS Code for each configuration

Modular Straight Stem Features

• Straight Femoral Stem Geometry
• Designed for use within a Modular Femoral System
• 8 Size Configurations
• Wide diameter range from 7 to 17.5 mm
• Length range from 142 to 180 mm
• Structured progression of diameters and lengths
• Provides multiple options during Preoperative Planning
• Supports flexibility in Intraoperative Implant Selection
• Individual Product Code for each implant size
• Facilitates Implant Inventory management and Surgical Set preparation
• Simplifies identification and comparison of implant sizes within the product catalogue
• Designed for use with compatible components in accordance with the system’s approved IFU and Surgical Technique