The Modular Ball Head range includes three diameters of Modular Femoral Heads: 22 mm, 28 mm, and 32 mm, designed to function as part of the Femoral Construct within compatible Hip Arthroplasty Systems.
According to the supplied product data, the ball heads are manufactured from Co-Cr-Mo Alloy – Cobalt Chromium Molybdenum Alloy. Each diameter is available in three different configurations: Short, Medium, and Long, creating a total range of 9 Implant Configurations.
The Modular Ball Head is mounted onto a Compatible Femoral Stem through a modular interface compatible with the system. Once assembled, the spherical external surface of the head forms the femoral component of the Articulating Bearing Couple and articulates within the compatible Acetabular Liner or Insert.
The availability of different Head Diameters and Neck Length Configurations allows the surgeon to select the implant according to Preoperative Planning, Intraoperative Assessment, and the requirements of Hip Biomechanics Reconstruction. Considerations may include Joint Stability, Femoral Offset, Leg Length, Soft-Tissue Tension, and Range of Motion, in accordance with the approved Surgical Technique of the system.
Each product configuration carries an individual AMS Product Code, facilitating accurate implant identification, Surgical Set Preparation, inventory management, procurement, and stock control.
What Is a Modular Ball Head?
A Modular Ball Head, also known as a Modular Femoral Head, is the spherical component on the femoral side of an artificial hip joint. It is mounted onto a compatible Femoral Stem to form the component that articulates within the Acetabular Bearing Surface.
The design is based on the concept of Modularity, allowing selection of the appropriate femoral head according to its diameter and Neck Configuration, while maintaining compatibility with the other components of the system.
The range includes three main diameter categories:
- 22 mm Modular Ball Head
- 28 mm Modular Ball Head
- 32 mm Modular Ball Head
Each diameter is available in:
- Short
- Medium
- Long
Product Components and Design
- Spherical Femoral Head
The main spherical body of the implant, designed to function as the Articulating Femoral Component.
Available in three diameters:
22 mm – 28 mm – 32 mm
- Co-Cr-Mo Alloy Body
The product is manufactured from:
Co-Cr-Mo Alloy – Cobalt Chromium Molybdenum Alloy
according to the technical information provided in the product table.
- Internal Modular Bore
The internal cavity of the Femoral Head, designed to connect with the compatible Femoral Stem.
- Modular / Taper Interface
The connection interface between the Femoral Head and the Femoral Stem, allowing assembly of the components within the Modular Femoral System.
The type and size of the taper are not specified in the supplied product data. Therefore, a specific value such as 12/14 Taper should not be stated without consulting the approved Technical Datasheet.
- Neck-Length Configuration
The product range provides three configurations:
Short – Medium – Long
This allows the surgeon to select the appropriate Head Configuration according to the requirements of the Femoral Reconstruction and the compatible system being used.
Product Application
The Modular Ball Heads 22 / 28 / 32 MM are designed for use within compatible Total Hip Arthroplasty / Hip Replacement Systems.
The ball head is mounted onto the Compatible Femoral Stem and articulates with the compatible Acetabular Liner or Insert to form the Artificial Hip Articulation.
Selection of the appropriate diameter and configuration depends on several surgical factors, including:
- Preoperative Templating
- Femoral Component Position
- Acetabular Bearing Compatibility
- Joint Stability
- Leg Length
- Femoral Offset
- Soft-Tissue Tension
- Range of Motion
- Intraoperative Trialing
The Final Implant Configuration is determined by the surgeon according to the patient’s condition and the approved Surgical Technique of the system.
Key Benefits
Multiple Head Diameters
The product range is available in three diameters:
22 mm, 28 mm, and 32 mm
providing multiple Head Diameter Options within the system.
Three Configurations per Diameter
Each diameter is available in:
Short, Medium, and Long
providing multiple options during Intraoperative Trialing.
Modular Implant Selection
The modular design allows selection of the appropriate Head Configuration from among the compatible components of the system.
Support for Hip Biomechanics Reconstruction
The available head and neck configurations provide flexibility when assessing and restoring elements of Hip Reconstruction, including:
- Femoral Offset
- Leg Length
- Soft-Tissue Balance
- Joint Stability
Co-Cr-Mo Alloy Construction
All ball heads listed in the product table are manufactured from Co-Cr-Mo Alloy according to the supplied product data.
Organized Implant Portfolio
The range includes 9 Configurations with individual product codes, facilitating implant selection, surgical preparation, and inventory management.
Technical Specifications
Modular Ball Head 22 MM
| Product Code | Description | Diameter | Configuration |
| AMS 135.022.001 | Modular Ball Head – Co. Cr. Mo. Alloy Short | 22 mm | Short |
| AMS 135.022.002 | Modular Ball Head – Co. Cr. Mo. Alloy Medium | 22 mm | Medium |
| AMS 135.022.003 | Modular Ball Head – Co. Cr. Mo. Alloy Long | 22 mm | Long |
Modular Ball Head 28 MM
| Product Code | Description | Diameter | Configuration |
| AMS 140.028.001 | Modular Ball Head – Co. Cr. Mo. Alloy Short | 28 mm | Short |
| AMS 140.028.002 | Modular Ball Head – Co. Cr. Mo. Alloy Medium | 28 mm | Medium |
| AMS 140.028.003 | Modular Ball Head – Co. Cr. Mo. Alloy Long | 28 mm | Long |
Modular Ball Head 32 MM
| Product Code | Description | Diameter | Configuration |
| AMS 145.032.001 | Modular Ball Head – Co. Cr. Mo. Alloy Short | 32 mm | Short |
| AMS 145.032.002 | Modular Ball Head – Co. Cr. Mo. Alloy Medium | 32 mm | Medium |
| AMS 145.032.003 | Modular Ball Head – Co. Cr. Mo. Alloy Long | 32 mm | Long |
Technical Overview
Product Name: Modular Ball Head
Component Type: Modular Femoral Head
Product Category: Hip Arthroplasty Component
Application: Total Hip Arthroplasty / Hip Replacement
Material: Co-Cr-Mo Alloy
Available Head Diameters: 22 / 28 / 32 mm
Configurations per Diameter: Short / Medium / Long
Total Number of Configurations: 9
Connection Concept: Modular Femoral Stem Interface
Identification: Individual AMS Product Code for each configuration
Product Features
- Modular Femoral Head Design
- Three Head Diameters: 22, 28, and 32 mm
- Three configurations for each diameter: Short, Medium, and Long
- A total of 9 Implant Options
- Manufactured from Co-Cr-Mo Alloy according to the product data
- Designed for use with a Compatible Femoral Stem
- Functions as part of the Hip Bearing Couple
- Provides greater flexibility during Implant Selection
- Supports Intraoperative Trialing and selection of the final configuration
- Provides different options for restoring Hip Biomechanics
- Individual Product Code for each diameter and configuration
- Facilitates Implant Identification during surgical procedures
- Supports organization of the Surgical Set and Implant Inventory
- Suitable for integration into Procurement, Stock Control, and Inventory Management systems
- Compatible with the concept of Modular Hip Arthroplasty Systems when used with approved system components
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