Intrapelvic Migration of the Lag Screw with Wedge Wing from Dyna Locking Trochanteric Nail: A Case Report and Literature Review.

The intrapelvic migration of cervicocephalic lag screws is a rare complication after intertrochanteric fracture synthesis with an intramedullary nail. Only 15 cases of intrapelvic penetration by three different instrument systems have been described in the literature. However, to our knowledge, there is no report of intrapelvic migration of the lag screw with wedge wing designed to increase fixation power using the Dyna locking trochanteric (DLT) nail. We present a case of intrapelvic migration of the lag screw with wedge wing from DLT nail. The patient described herein underwent a two-staged operation of implant removal without intrapelvic approach followed by bipolar hemiarthroplasty. With intrapelvic migration conditions, although it is not uncommon to require an additional intrapelvic approach, this modification can lead to lethal consequences. For this reason, it is recommended to coordinate with the vascular surgery department due to the close proximity of the major vessels.