Summary
the use of Vertex polyaxial screws is only a minor part of the spinal implant protfolio at Medtronic (MDT:NYSE). This should not affect the bottom line to any significant extent.
Analysis
Vertex screws are used in posterior cervical spinal surgery. This type of surgery is relatively limited in numbers compared to some other approaches to the spine, and therefore, the use of this instrumentation probably represents much less than 5% of spinal implant sales at Medtronic.


