Complex sentence: Ridderbos et al, 152 He wears the Crown of Thorns; its spikes spill blood across his face while his arms are heavily lacerated by what appears to be whip marks.
Split into simpler sentences: Ridderbos et al, 152 He wears the Crown of Thorns; its spikes spill blood across his face. His arms are heavily lacerated by what appears to be whip marks.