Arbour found that Dyoplosaurus could generate an impact force of 797–1127 N and a more realistic tensions of 571 N, an impact force that isn’t enough to puncture bone. This is mainly due to the knob being smaller in comparison to that of other ankylosaurids. The small size of the tail club of suggests that ankylosaurid knobs were not primarily used as defensive weapons, as a weapon that is not functional until very late in life would probably not have a selective advantage over a weapon that is of use earlier in life.
Arbour discovered that Dyoplosaurus could generate impact forces of 797–1127 N and realistic tensions of 571 N, which were insufficient to pierce bone. This suggests the knob was smaller than in other ankylosaurs, and its small size indicates that it wasn't primarily used as a defensive weapon because a weapon that is only effective late in life wouldn't have a selective advantage over one that is useful earlier in life.