Hernia has a chance of recurring. That's why they use mesh to strengthen the wall and prevent recurrence of hernia.
"The incidence of recurrent hernia after primary repair of a groin hernia varies from 1% in specialized centers to 30% in general surveys. During the premesh era, it was estimated that primary inguinal hernia repairs had a 10%–30% recurrence rate and that the rate was 35% for recurrent hernia repairs"
Source:
Recurrence after groin hernia repair-revisited
Sri VengadeshGopal AchuthanWarrier
https://www.sciencedirect.com/science/article/pii/S1743919113000873