Hi Thanks for posting your query. I appreciate your concern for the ulnar neuropathy secondary to leprosy. It is unfortunate that the nerve damage is almost irreversible, i.e. it can be repaired. However, surgery (nerve decompression) improves sensation in selected patients with sensory impairment and most often prevents further deterioration. Sensory loss, though generally irreversible, can often be ameliorated by simple longitudinal epineurotomy. Peripheral nerve reconstruction using denatured muscle auto-grafts may help to restore protective sensation in hands. Nerve grafts may be helpful for patients with localized nerve lesions like ulnar neuropathy. A multidisciplinary team comprising a leprologist, a neurologist, physical and occupational therapists, and a surgeon with experience in peripheral nerve surgery is needed. Hope this answers your query. Rate this answer if you are convinced. Wishing you a very good health.