Crucified victims are nailed through the wrists,
This forced the thumb under the hand - it would be hidden from view.
How would a medieval forger know this?
How would a medieval forger know not to show the thumbs?
Dr Angelo Montante, Professor History/Philosophy
On the shroud's physiologically accurate depiction of a body after it
Evidence for article:
Is the Shroud of Turin Authentic - The Unconsidered Evidence
Jesus and the Shroud of Turin
The Learning Channel Documentary 1998, Questar DVD
Starting time ref: about 6:45