Roman crucifixion had many varieties.
The ankle bone of a crucified man found in a family mausoleum
could refute the thesis that Jesus, executed as a criminal,
did not receive a dignified burial.
Sharp-edged and painful seat (sedile).
The only known victim of crucifixion had a nail piercing his ankle-bone.
Iron nails were expensive, so the Romans almost always used ropes.
Church tradition says that Saint Peter was crucified upside down.
Support from the feet prolonged the agony of suffocation.
Traditionally Jesus is presented nailed by hands and feet to the Cross.