Modular Shell has following basic design features:
Modular Shell is manufactured from Ti-6Al-4V-ELI conforming to ASTM F136-13- “Standard Specification for Wrought Titanium-6Aluminum-4Vanadium ELI for Surgical Implant Applications” and ISO 5832-3:1996: " Implant for surgery-Metallic material – Part-3, Wrought Titanium 6-Aluminium 4-Vanadium alloy” and is intended to be used with mating liner.
Modular Shell is designed as a hemispherical geometry, press-fit shell with a porous coating on outer surface and is intended to be implanted in prepared acetabulum without bone cement (Press fit cementless fixation).
Titanium powder being used for coating conforms to ASTM F1580-12: Standard Specification for Titanium and Titanium-6Aluminum-4 Vanadium Alloy Powders for Coatings of Surgical Implants and ISO 5832-2:1999 “Implants for surgery - metallic materials - Part 2: Unalloyed titanium” Modular Shell has internal taper and circumferential locking undercut feature to facilitate taper locking and rim locking of modular HXLPE liner with modular shell.
Modular Shell is provided with a threaded apical hole at dome to attach instruments for surgical insertion in prepared acetabulum.
Two/Three screw holes are provided in modular shell for optional additional immediate fixation through bone screws. Smaller modular shell sizes (i.e. outer diameter 40, 42, 44 mm) contain 2 holes while rest of shell sizes contains 3 holes.
Eight/Twelve circumferential equidistant castellation (groves or tab cut outs) are provided to fit with anti-rotational lugs (tabs) of the modular HXLPE liner component. The smaller modular shell sizes (i.e. outer diameter 40, 42, 44 mm) have eight tab cutouts at every 45º and rest of the sizes have twelve tab cut outs at every 30º. Unused tab cut outs of shell are used for modular liner extraction, if required.
Modular Shell is available in different sizes based on outer diameter ranging from 40 to 70 mm in 2 mm increments.
Key Features
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Product Details
Size Chart
