摘要：

A tulip assembly (100, 800) configured to be coupled to a screw head (110) having a first diameter (550) includes a housing (106, 806), wherein the housing (106, 806) defines an inner diameter (500, 750, 755) configured to engage the first diameter (550) of the screw head (110). The exemplary inner diameter (500, 750, 755) of the housing (106, 806) being smaller than the first diameter (550) of the screw head (110).

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