The Humeral Stem [Titanium Alloy] is one of the primary components of the Humeral Side within compatible Shoulder Replacement / Shoulder Arthroplasty systems. It is designed to extend into the Humeral Intramedullary Canal and form the primary foundation of the Humeral Prosthetic Construct.
According to the supplied product data, the stem is manufactured from Titanium Alloy and features a longitudinal design combining a Proximal Humeral Section with an intramedullary stem extending into the humerus. The proximal section incorporates geometry designed for connection with compatible articulating components within the Shoulder Prosthesis System.
The product range includes four Stem Diameters: 7 mm, 9 mm, 11.25 mm, and 12.5 mm. Each diameter is available in two different lengths: 130 mm and 150 mm, providing a total of 8 Humeral Stem Configurations.
This range of diameters and lengths provides multiple options during Preoperative Planning, Humeral Canal Preparation, and Intraoperative Implant Sizing. The appropriate stem is selected according to the dimensions of the humeral canal, Bone Anatomy, Bone Stock, and compatibility with the other components of the shoulder system.
Each diameter/length combination carries an individual AMS Product Code, facilitating Implant Identification, Surgical Set Preparation, Procurement, Inventory Management, and Stock Control.
What Is a Humeral Stem?
A Humeral Stem is an Orthopedic Implant Component that forms the primary component positioned within the humerus in shoulder arthroplasty systems.
The stem is inserted into the:
Humeral Intramedullary Canal
following preparation of the Proximal Humerus and the intramedullary canal using the instruments specified for the system.
The proximal portion of the stem functions as an interface for connection with compatible articulating components within the Shoulder Prosthetic Construct.
Stem selection is primarily based on:
- Humeral Canal Diameter
- Proximal Humeral Anatomy
- Bone Stock
- Required Stem Length
- Preoperative Templating
- Intraoperative Broaching / Sizing
- Compatibility with the Shoulder Prosthesis System
Product Components and Design
- Proximal Humeral Section
The proximal portion of the stem positioned in the Proximal Humerus.
It functions as the base for connection with compatible superior components within the Shoulder Replacement Construct.
- Modular Prosthetic Interface
The proximal section incorporates Connection Geometry designed to receive or connect with the compatible articulating component of the system.
The exact Taper Type, Locking Mechanism, and interface dimensions are not specified in the supplied product data and should therefore not be stated without reference to the approved Technical Datasheet.
- Metaphyseal / Proximal Stem Body
The upper section of the stem body positioned within the Proximal Humeral Metaphysis, forming the transition between the Prosthetic Interface and the longer intramedullary stem section.
- Intramedullary Stem Body
The longitudinal body of the implant designed to extend within the Humeral Intramedullary Canal.
Available in two lengths:
130 mm and 150 mm
- Distal Stem Section
The distal end of the Humeral Stem, representing the most distal portion of the intramedullary component.
The stem dimensions vary according to the selected Diameter and Length Configuration.
- Titanium Alloy Construction
The product is clearly identified as:
Humeral Stem [Titanium Alloy]
indicating that the stem is manufactured from Titanium Alloy.
The exact Titanium Grade or Alloy Standard is not specified in the current product table.
Product Application
The Humeral Stem [Titanium Alloy] is used within compatible Shoulder Arthroplasty / Shoulder Replacement systems to form the humeral side of the Prosthetic Shoulder Construct.
The general surgical workflow may include:
- Preoperative Imaging & Planning
- Assessment of Proximal Humeral Anatomy
- Evaluation of Humeral Canal Dimensions
- Preparation of the Proximal Humerus according to the system
- Intramedullary Canal Preparation / Broaching
- Selection of the appropriate Stem Diameter
- Selection of the appropriate Stem Length
- Trial Component Assessment
- Evaluation of:
- Implant Fit
- Stem Position
- Component Alignment
- Prosthetic Compatibility
- Joint Reconstruction
- Placement of the Final Humeral Stem
- Completion of the Shoulder Construct using compatible components
The final stem configuration should be determined by a Qualified Orthopedic Surgeon in accordance with the approved IFU and Surgical Technique.
Key Benefits
Multiple Stem Diameters
The product range is available in four diameters:
7 / 9 / 11.25 / 12.5 mm
providing a graduated selection according to Humeral Canal dimensions.
Two Stem Length Options
Each diameter is available in two lengths:
130 mm – 150 mm
providing more than one Intramedullary Stem Length option within the system.
Eight Implant Configurations
The range provides:
4 Diameters × 2 Lengths = 8 Configurations
giving the surgical team an organized product range for selection during planning and surgery.
Titanium Alloy Construction
The specified product material is Titanium Alloy, according to the supplied product data.
Humeral Canal Sizing Flexibility
The range of stem diameters supports implant selection according to:
- Humeral Canal Anatomy
- Canal Preparation
- Bone Dimensions
- Intraoperative Sizing
Modular Shoulder Construct Integration
The stem incorporates a Proximal Interface designed to function with compatible components within the Shoulder Prosthesis System.
Clear Implant Identification
A separate product code for each diameter/length combination facilitates:
- Implant Identification
- Surgical Set Preparation
- Procurement
- Inventory Management
- Stock Control
Technical Specifications
| Product Code | Stem Diameter | Total Length |
| AMS 104.130.007T | 7 mm | 130 mm |
| AMS 104.150.007T | 7 mm | 150 mm |
| AMS 104.130.009T | 9 mm | 130 mm |
| AMS 104.150.009T | 9 mm | 150 mm |
| AMS 104.130.112T | 11.25 mm | 130 mm |
| AMS 104.150.012T | 11.25 mm | 150 mm |
| AMS 104.130.125T | 12.5 mm | 130 mm |
| AMS 104.150.125T | 12.5 mm | 150 mm |
Technical Overview
Product Name: Humeral Stem [Titanium Alloy]
Product Type: Humeral Prosthetic Stem
Product Category: Shoulder Arthroplasty Component
Anatomical Application: Proximal Humerus / Humeral Canal
Material: Titanium Alloy
Available Stem Diameters: 7 / 9 / 11.25 / 12.5 mm
Diameter Range: 7–12.5 mm
Available Lengths: 130 / 150 mm
Length Range: 130–150 mm
Configurations per Diameter: 2
Total Available Configurations: 8
Implant Concept: Intramedullary Humeral Stem
Proximal Interface: Compatible Shoulder Prosthesis Component
Identification: Individual AMS Product Code for each Diameter / Length combination
Product Features
- Titanium Alloy Humeral Stem
- Designed for use within compatible Shoulder Replacement / Shoulder Arthroplasty Systems
- Intramedullary Stem Geometry designed for the Humeral Canal
- Four different Stem Diameters
- Diameter Range: 7–12.5 mm
- Available in two lengths: 130 and 150 mm
- A total of 8 Implant Configurations
- Provides multiple options during Humeral Canal Sizing
- Supports Preoperative Templating
- Provides options during Intraoperative Implant Selection
- Incorporates proximal geometry designed for connection with compatible Shoulder Prosthesis Components
- Allows selection of diameter and length according to Humeral Anatomy and case requirements
- Individual Product Code for each configuration
- Facilitates Implant Identification and Surgical Set Preparation
- Supports Procurement, Inventory Management, and Stock Control
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