If there is a Fortran to MATLAB translator (I'm not aware of any, but some aspects of these languages are quite similar), you should check out the new MATLAB translator in Maple 12 to import that intermediate code. See e.g. ?FromMatlab and ?FromMFile for more details. This facility does not cover 100% of MATLAB's language features, but it's extensible by the user.
backward
It seems Maple only has the "Fortran" function, which translates from Maple to Fortran.
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G A Edgar
Vague guess: intermediate step?
If there is a Fortran to MATLAB translator (I'm not aware of any, but some aspects of these languages are quite similar), you should check out the new MATLAB translator in Maple 12 to import that intermediate code. See e.g. ?FromMatlab and ?FromMFile for more details. This facility does not cover 100% of MATLAB's language features, but it's extensible by the user.
Another possibility
Using define_external, you can call Fortran routines from Maple.