From hyper- + torsion.
hypertorsion (uncountable)
- Excessive torsion.
2016 February 25, “Record-Breaking Pain: The Largest Number and Variety of Forelimb Bone Maladies in a Theropod Dinosaur”, in PLOS ONE[1], →DOI:The humerus exhibits no apparent evidence of any injury or other physical insult that could have caused the hypertorsion.