For the description of the long-wavelength quantum states of electrons in c
rystals with topological defects we establish a general framework on the ba
sis of the continuum theory of defects. The resulting one-particle Schrodin
ger equation lives on a Riemann-Cartan manifold, representing the distorted
crystal, and consists of two parts. All effects due to the topology of the
defects are contained in the first part which has a covariant form and des
cribes the purely geometric particle motion. The second part is non-covaria
nt and derives from de formation-dependent funneling rates of the particle
which e.g. are responsible for the existence of bound states to edge disloc
ations.