Was Jesus nailed by his heels?

http://www.churchtimes.co.uk/80256FA1003E05C1/httpPublicPages/DCB924AD0EEA1B0380257148003E349B?opendocument

[Church Times] April 7, 2006--Traditional images of the crucifixion could be wrong in their depiction of how Jesus’s body was nailed to the cross, two researchers from Imperial College, London, have argued.