Modular Heads Standard [St. St.]

The Modular Heads Standard [St. St.] are key articulating components of the Humeral Side within compatible Shoulder Replacement / Shoulder Arthroplasty systems. The modular head is assembled onto the compatible Humeral Stem to form the prosthetic articulating surface of the humeral head.

According to the supplied product data, this product range is manufactured from Stainless Steel [St. St.] and features a Modular Design that allows selection of the appropriate head size and connection to the compatible humeral component within the system. The external surface of the head functions as the Articulating Surface within the Shoulder Prosthetic Construct, while the Internal Connection Geometry provides the interface with the humeral component.

The range is available in three sizes listed in the table: 40 mm, 42 mm, and 44 mm, providing a graduated selection of Humeral Head Sizing options during Preoperative Planning and Intraoperative Trialing.

The availability of multiple sizes supports selection of the appropriate Modular Head Configuration according to Proximal Humeral Anatomy, Component Compatibility, Joint Reconstruction, Soft-Tissue Balance, and intraoperative assessment findings.

Each size carries an individual AMS Product Code, supporting accurate Implant Identification, Surgical Set Preparation, Procurement, Inventory Management, and Stock Control.

What Are Modular Heads Standard?

A Modular Humeral Head is a prosthetic component that represents the articulating portion of the artificial humeral head within Shoulder Replacement Systems.

It is assembled onto the Compatible Humeral Stem through a dedicated modular connection, forming part of the Humeral Prosthetic Construct.

Its external surface functions within the Shoulder Articulation against the compatible opposing component of the shoulder replacement system.

The Modular Design allows selection of different head sizes while maintaining compatibility with the other system components according to the manufacturer’s Compatibility Matrix and instructions.

Product Components and Design

1. Humeral Head Body

The main body of the Modular Head, designed with an articulating geometry to form the prosthetic surface of the humeral head.

The product range is available in:

40 mm – 42 mm – 44 mm

2. Stainless Steel Construction

The product is identified as:

Modular Heads Standard [St. St.]

where St. St. indicates Stainless Steel according to the product designation.

The exact Stainless Steel Grade or applicable material standard is not specified in the supplied product table.

3. Articulating Surface

The external polished surface of the head, which functions as the Prosthetic Articular Surface within the compatible shoulder joint construct.

The supplied data do not specify the Surface Roughness or exact Surface Finish.

4. Internal Modular Interface

The product incorporates a central internal recess designed for connection with the compatible Humeral Component.

This interface allows assembly of the Modular Head with the compatible Humeral Stem according to the system design.

5. Standard Head Geometry

The product is classified as a Standard Modular Head, distinguishing it within the range of humeral head options available for the shoulder replacement system.

Specific values for Head Height, Offset, or Curvature are not provided in the available product data.

Product Application

The Modular Heads Standard [St. St.] are used as part of the Humeral Construct within compatible:

Shoulder Arthroplasty / Shoulder Replacement Systems

After selection and placement of the compatible Humeral Stem, the appropriate Modular Head Size is selected according to the surgical plan and findings obtained using trial components.

Head selection may involve evaluation of:

• Proximal Humeral Anatomy
• Humeral Stem Compatibility
• Head Size
• Joint Geometry
• Soft-Tissue Tension
• Component Position
• Shoulder Stability
• Range of Motion
• Intraoperative Trial Reduction

The Final Head is assembled onto the compatible Humeral Stem according to the approved Surgical Technique of the system.

Key Benefits

Modular Head Concept

The Modular Design allows selection of the appropriate head configuration while maintaining compatibility with the humeral stem used within the system.

Three Size Options

The product range is available in three sizes:

40 / 42 / 44 mm

providing multiple options during Humeral Head Sizing.

Progressive Size Range

The available sizes increase in consistent:

2 mm increments

providing an organized size progression during Implant Selection.

Stainless Steel Construction

The specified product material is Stainless Steel [St. St.], according to the supplied product data.

Shoulder Reconstruction Flexibility

The availability of multiple sizes provides greater flexibility during:

• Preoperative Planning
• Trialing
• Component Sizing
• Final Head Selection

Clear Implant Identification

Each size carries an individual product code, facilitating:

• Implant Identification
• Surgical Set Preparation
• Procurement
• Inventory Management
• Stock Control

Technical Specifications

Product Code	Product	Size Listed in Table
AMS 104.200.040S	Modular Heads Standard [St. St.]	40 mm
AMS 104.200.042S	Modular Heads Standard [St. St.]	42 mm
AMS 104.200.044S	Modular Heads Standard [St. St.]	44 mm

Technical Overview

Product Name: Modular Heads Standard [St. St.]
Product Type: Modular Humeral Head
Product Category: Shoulder Arthroplasty Component
Application: Shoulder Replacement System
Material: Stainless Steel [St. St.]
Design: Standard Modular Head
Available Sizes: 40 / 42 / 44 mm
Size Range: 40–44 mm
Size Increment: 2 mm
Number of Configurations: 3
Component Interface: Compatible Humeral Stem
Functional Role: Humeral Articulating Component
Identification: Individual AMS Product Code for each size

Product Features

• Standard Modular Humeral Head Design
• Designed for use within compatible Shoulder Replacement Systems
• Manufactured from Stainless Steel according to the supplied product data
• Available in 3 different sizes
• Available sizes: 40, 42, and 44 mm
• Consistent 2 mm size increments
• Functions as an Articulating Component on the humeral side
• Incorporates a Modular Interface for connection with the compatible Humeral Stem
• Provides multiple options during Humeral Head Sizing
• Supports Preoperative Planning
• Allows Intraoperative Trialing
• Supports selection of the Final Head Size according to shoulder reconstruction requirements
• Individual Product Code for each size
• Facilitates Implant Identification and Surgical Set Preparation
• Supports Inventory Management, Procurement, and Stock Control