Can an inguinal hernia cause testicular entrapment?

Yes by complications: Inguinal hernia by itself will not, but a huge untreated incarcerated inguino- scrotal hernia may cause entrapment, also as a rare post operative complication.

Sometimes: An inguinal hernia can be large and extend into the scrotum impinging on the testicle. On occasions it can also draw the testicle into the inguinal canal and cause discomfort and even pain.