Rome used crucifixion particularly for slaves, rebels, provincials, and others whose execution could serve as a public warning. Practices varied, so there was no single mechanical procedure that must be reconstructed in every detail. Condemned persons could be scourged, forced to carry part of the execution apparatus, stripped, affixed to a cross by nails or other means, and left exposed to prolonged suffering and public ridicule.
The punishment attacked social dignity as well as the body. Exposure before spectators, helplessness, mockery, and the location of executions where they could be seen all contributed to its deterrent purpose. Roman citizens were ordinarily protected from crucifixion, reinforcing its association with degradation and subjection.
The Gospels emphasize different details but agree that Jesus was crucified under Roman authority. Speculative medical reconstructions can go beyond the evidence; the historical point does not depend on identifying one precise physiological cause of death. Crucifixion itself was a brutal Roman instrument of execution and humiliation.