The court was shown videos of the boys with a claw hammer, climbing on roofs, throwing missiles, urinating in public, spitting and jumping on a car.

BBC: News | UK | Court brands youths 'anti-social'

David Stupart, 28, and brother Graham, 32, armed themselves with a claw hammer and knife before going to a Dundee home and demanding the return of the TV set.

BBC: Brothers jailed for 'vicious' Dundee attack

The study, carried out between 2002 and 2008, looked at people who had foot complaints, including bunions and hammer and claw toes and then looked at the incidence of the same conditions in close family members.

BBC: Bunions - family not footwear to blame