Marks use of the past-participle form of the verb “improve” functioning adjectivally.
Translations
After months of therapy, her mobility is greatly improved.
Après des mois de thérapie, sa mobilité s'est beaucoup améliorée.
Definitions
Made better; being in a condition that has benefited from improvement (past participial adjective of “improve”). After months of therapy, her mobility is greatly improved.