Hi Kaye,
The only film I remember where a man gets the backs of his ankles slashed (That really makes me cringe just thinking about it!) is Pet Semetry. There's a scene where a man has his ankles slashed (not sure if he is running back to his car but it rings bells) by the young boy that had been brought back to life by being buried in the Pet Semetry by his father. Anything buried there would come back but evil.
That film is about mid 80's I think. I'll have a look see what I can find.