Is bowing in long bones from an archaeological context representative of postmortem damage or genuine antemortem pathology? Bowing deformities (also known as traumatic bowing deformities, plastic bowing deformities, plastic bowing fractures and acute bowing fractures in the clinical literature) are true pathological entities that have only recently been recognized by clinicians. Bowing in long bones results from a force that exceeds the elastic properties of a given bone, producing a new plastic (bowing) response phase. These subtle deformities commonly affect the radii and ulnae in children and less frequently other tubular bones of the skeleton. Traumatic bowing should be considered as a possible diagnosis whenever abnormal curvature of a long bone is observed. This presentation illustrates two cases of traumatic bowing isolated from two ossuary populations from Ontario, Canada and addresses differential diagnostic concerns. © 1998 John Wiley & Sons, Ltd.