How can you identify a criminal by the way they walk?

A burglar has been caught because of his bow-legged walk, but how easy is it to catch a criminal by analysing their gait?
John Rigg was both lucky and unlucky when he was caught on CCTV near a house he had burgled.
Lucky because it didn't catch his face. Unlucky because the footage showed his walk, which was, to the casual observer, rather like John Wayne's.
Rigg's DNA was also found on an object near the burgled house, but the evidence of podiatrist Ian Linane was crucial in his conviction.Linane used gait analysis on behalf of Lancashire police to establish that the bow-legged man in the blurry black and white CCTV footage, was the man police already suspected of the crime. He was jailed for two years.With the ubiquity of CCTV cameras, many of which produce only very low quality pictures, the use of forensic podiatry is booming.First used in 2000, in the UK, by Harley Street podiatrist Haydn Kelly, experts like Kelly and Linane have been called in by police officers in numerous investigations.