Further analysis of Richard the III's skeleton sheds light on his spinal deformity. The article suggests that he could move and exercise normally, despite twisting to the mid-portion of his spine. The full paper (The Lancet, vol 383, p 1944) goes on to describe the physical deformity as slight. The deformity has been embellished in paintings of Richard altered by Tudor painters after his death.
As to whether Richard III was crooked in nature and murdered his nephews to gain the throne, the jury is still out.
Shakespeare famously labelled King Richard III a hunchback, but a new analysis suggests England's last Plantagenet king had a different spinal deformity – one with a cause that continues to elude modern medicine.