Unusual Occurrence of Incarceration and Breakage of the Coiled Shaft of the Intramedullary Reamer during Closed Intramedullary Nailing of Tibia.

Introduction: Intramedullary (IM) nailing is a well-established method of treating closed tibia shaft fracture. We hereby describe an unusual incidence of the incarceration of the flexible IM reamer in the distal fracture fragment with breakage of the coiled shaft of the reamer in the proximal third of tibia during closed IM nailing. This case report highlights the usefulness of making a small window in the tibia to aid retrograde removal of incarcerated reamer.

Case Presentation: A 26-year-old male patient had road traffic accident and sustained a close fracture of the right distal 3rd tibia along with segmental fracture of the adjacent fibula. The tibia nailing was done under combined spinal and epidural anesthesia. The proximal tibia was approached by a midline incision with splitting of the patellar tendon. The reduction of the fracture fragments was done and the guide wire was inserted. The medullary canal was narrow and hence the initial reaming was started with the smallest available, that is, 8 mm reamer. After crossing the fracture site, we noticed that reamer coiled shaft got broken into multiple pieces in the medullary cavity at proximal 3rd tibia. The fracture site was exposed and a linear osteotomy was done in distal tibial fragment. Through this window, the broken reamer was pushed in the retrograde manner and was delivered out. Most of the broken metal pieces of the reamer shaft were removed with pituitary rongeur. An 8 mm solid IM nail was passed in antegrade manner across the fracture site and was locked distally and proximally. The operative wounds were irrigated and closure was done in layers. The patient was allowed partial weight bearing at 3 weeks post-surgery with gradually progressing to full weight bearing at 10 weeks after confirming clinical and radiological union.

Conclusion: To handle this unusual occurrence one needs to stay calm, make a small window to aid retrograde removal of reamer and remove the fragmented pieces of the coiled shaft of the reamer. In tight medullary canal, it is desirable to have smaller diameter reamers, that is, 6 mm during the surgery.