The Jack Cage is a specialized interbody fusion device used in spinal surgery for Vertebral Body Replacement (VBR) or interbody fusion, typically in the lumbar and thoracic spine. The “Jack” mechanism refers to its ability to be expanded or ‘jacked up’ in situ to restore the lost disc height and spinal curvature (lordosis/kyphosis). Unlike the “Jack Cage with Plate,” this variant requires a separate anterior plate or screw system for supplemental fixation. It is designed to provide robust central column support and spacing for bone graft material.
Key features include:
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Jack/Expansion Mechanism: Allows for in situ height adjustment to restore spinal alignment and tension the soft tissues.
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Primary Use: Vertebral body replacement and interbody fusion, requiring a supplemental anterior fixation system.
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Modular Sizes: Available in three different diameters: 12, 14, and 16.
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Standardized Dimensions: Available in three fixed length options (Length x Width): 20 x 25mm, 25 x 32.5mm, and 35 x 42.5mm.
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Material: Often made of Titanium (implied by typical spinal hardware standards).
