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GLOBAL® STEPTECH® APG Shoulder System
GLOBAL® STEPTECH® APG Shoulder System builds on the clinical history of the GLOBAL® Anchor Peg Glenoid by incorporating proven design elements, and PREMIERON® X-Linked Polyethylene to create a technologically advanced glenoid implant.
The GLOBAL STEPTECH APG Glenoid Component has been designed to correct excessive retroversion caused by posterior glenoid bone loss, closely recreate the original glenohumeral joint line, and reduce the removal of healthy bone. The prosthesis incorporates a proprietary step technology design with an anterior backside surface that is spherical and a posterior backside surface that is conical to effectively counteract posterior loading. The amount of correction is managed by the height (+3, + 5, or +7mm) of the posterior step built into the component. All of these features work together to potentially decrease the shear stresses at the bone/implant and bone/cement interfaces, thereby increasing implant stability.
GLOBAL STEPTECH APG Implants may potentially:
- Reduce the need for glenoid bone graft to correct asymmetrical wear
- Reduce the surgical time needed to correct asymmetrical wear using bone graft
- Reduce the extent of the high side reaming, and the resulting loss of healthy bone and joint medialization
Features & Benefits
GLOBAL STEPTECH Implants
Advanced Proprietary Step Technology
- Spherical anterior and conical posterior backside offer dual surface design to effectively counteract posterior loading
- Various degrees of correction are managed by the height (+3, + 5, or +7mm) of the posterior step built into the PREMIERON X-Linked Polyethylene
GLOBAL STEPTECH Implants
Premieron X-Linked Polyethylene
- 85% reduction in wear debris over conventionally manufactured and sterilized components1
- GUR 1020 polyethylene resin
- 5 Mrad of irradiation
- Thermally treated to 155˚ F to eliminate free radicals for an oxidatively stable material
- Maintains mechanical integrity
GLOBAL STEPTECH APG Instrumentation System
Anterior/Posterior Scraper, Superior/Inferior Scraper +3, +5, +7mm, L or R
- An alternative to accurately prepare the posterior surface of the glenoid by hand
- Scrapers designed for the left or right shoulder and each of three different step heights.
GLOBAL STEPTECH APG Instrumentation System
Peripheral Drill Guide +3, +5, +7mm, L or R
- Allows for accurate drilling of three peripheral holes
- Color-coded hole locations match respective Peripheral Drill Bit Anterior, Superior/Posterior for each step height for easy identification
GLOBAL STEPTECH APG Instrumentation System
Oscillating Rasp and Rasp Guide +3, +5, +7mm, SM or LG
- Oscillating Rasp mates with the Rasp Guide to accurately prepare the posterior surface of the glenoid when used with a power source.
- Rasp Guide protects the prepared anterior surface and central drill hole during preparation of the posterior surface
- Two different size guides offered for each of three different step heights
References
1. Wirth MA, Korvick DL, Basamania CJ, et al. Radiologic, mechanical and histologic evaluation of 2 glenoid prosthesis designs in a canine model. Journal of Shoulder and Elbow Surgery. 2001;10(2) 140-148.
Indication Statement
The GLOBAL STEPTECH Anchor Peg Glenoid is intended for use in total shoulder replacement
surgery for patients suffering from:
- A severely painful and/or disabled joint resulting from osteoarthritis, traumatic arthritis or rheumatoid arthritis.
- Fracture-dislocations of the proximal humerus where the articular surface is severely communited, separated from its blood supply or where the surgeon's experience indicates that alternative methods of treatment are unsatisfactory.
- Other difficult clinical problems where shoulder arthrodesis or resection arthroplasty are not acceptable (e.g. revision of a failed primary component).
Glenoid components are intended for cemented use only.
WARNING: This product has labeling limitations. See package insert for complete information.
094266-180629
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