A spacer assembly is provided for use in spinal surgeries. The spacer assembly includes a spacer having opposite ends and a side wall extending between the opposite ends and at least one end cap coupled to at least one of the opposite ends of the spacer. Each end cap includes an inner end facing the spacer, an outer end having a serrated surface, and a side wall extending between the inner and outer ends. The side wall of each end cap is formed for engagement with the side wall of the spacer to provide a mechanical connection between the end cap and the spacer.
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