It looks likely during the surgery you sustained the nerve injury.
And any subsequent activities are causing aggravation of the nerve inflammation.
You will need to get a nerve conduction study first to assess the extent of nerve damage.
Steroid does help with the symptoms.
In fact steroid injection intra articular can be tried.
Physical therapy by an experienced therapist can be attempted to avoid nerve injury.
If there is significant nerve impingement, then you may need to see a neurosurgeon for another nerve repair surgery.
Nerve block injection can be tried as well.
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