Buch R G, Kernek C B, Madura J A, Province W D
Orthopedics. 1985 Aug;8(8):1023-4. doi: 10.3928/0147-7447-19850801-14.
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.
