  The engineering of non-trivial topology in superconducting heterostructures
is a very challenging task. Reducing the number of components in the system
would facilitate the creation of the long-sought Majorana bound states. Here,
we explore a route toward emergent topology in a trivial superconductor without
a need for other proximitized materials. Specifically, we show that a vortex
hosting an even number of flux quanta is capable of forming a
quasi-one-dimensional topological sub-system that can be mapped to the Kitaev
wire, if the vortex is trapped at a screw dislocation. This crystallographic
defect breaks inversion symmetry and thereby threads a local spin-orbit
coupling through the superconductor. The vortex-dislocation pair in the
otherwise trivial bulk can harbor a pair of Majorana bound states located at
the two surface terminations. We explain the topological transition in terms of
a band inversion in the Caroli-de Gennes-Matricon vortex bound states and
discuss favorable material parameters.
