Intrapelvic migration of a Knowles pin is rare. A case is reported of Knowles pin migration into the pelvis and through the external iliac vein. This was caused by a combination of excessive motion of the femoral neck nonunion and osteoporosis of the femoral head which allowed forward migration of the pin.
No takes yet. Share an insight, caveat, or question.
Buch et al. (1985) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: