A Special Technique to Remove a Jammed Cephalic Screw from an Intramedullary Nail: A Case Report

Abstract

Background:  The complexity of implant removal is a well-known problem in the field of orthopedics. It is encountered mainly during the removal of plates and screws and understood by the phenomenon of seizing or cold-welding, formerly known in mechanics. In this case study, we describe a complex experience during a gamma nail removal in a 21-year-old male patient, explained by the same phenomenon of seizing or cold-welding. The case is rather unusual and rare, with no similar reports in the literature, and required a special technique of extraction.

Case Report: A 21-year-old male presented to our clinic with a 5-months history of right groin pain radiating to the anterior thigh. The patient was a victim of a car accident three years ago that resulted in right femoral neck and shaft fractures, which were managed by open reduction and internal fixation by a long gamma nail with distal locking. After proper examination, the team decided to remove the implant. There was difficulty loosening the cephalic screw as it was welded to the nail. For this reason, we opted for a technique that involved making a transverse slit at the level of the anterior part of the nail which is in contact with the cephalic screw. It was followed by a hammer blow at the level of the cephalic screw, allowing it to loosen and thus allowing the screws along the femoral nail to be removed successfully.

Conclusion: Our report describes a rare case of a cephalic screw cold-welded/seized into the intramedullary nail, which can be an unexpected and serious complication during intramedullary nail removal. However, our technique described in this case can be an effective way to treat such a complication.