If untreated, testicular torsion
leads to a complete shut down of the blood flow to the testis which eventually results in death and atrophy
of the testis. The affected testis would no longer be able to produce sperms. The management of testicular torsion is therefore nearly always surgical if diagnosed properly to save the testis. In your case, the viability of the testis should be assessed with the help of special investigations but it appears that atrophy has set it given your symptoms. I would suggest you to go in for a complete examination with your surgeon to know more.