Migration of patella tension band metal wires to popliteal fossa: Retrieval by posterior knee arthroscopy – A case report and literature review

Abstract

Breakage of metal wires after fixation of patella fractures are common. However, migration of the broken wires to intraarticular location, popliteal fossa and distant sites can be least expected and a difficult scenario for retrieval. We describe in a 58-year male who presented with recurrent locking and migration of broken wires in popliteal fossa. he had fixation of patella fracture nine years ago. The metal wire was retrieved safely from the posterior lateral aspect of knee popliteal fossa by posterior knee arthroscopy using two posterior lateral portals. Through this case, we review the presentation of migrated wires, methods of retrieval and role of arthroscopy. Retrieval of migrated wires by knee arthroscopy can be successful in intraarticular location and in select cases at popliteal fossa, however with significant challenges. To avoid concerns with migration of wires, patients treated with wires for patella fractures should be adequately followed with radiography and sensitized for removal before breakage or at the time of breakage.