Division of Orthopaedic Trauma, Department of Orthopaedic Surgery, University of Medicine and Dentistry of New Jersey (UMDNJ)-New Jersey Medical School, Newark, NJ 07103, USA.
J Orthop Trauma. 2011 Oct;25(10):e100-3. doi: 10.1097/BOT.0b013e318206cd20.
Unstable intertrochanteric and subtrochanteric fractures historically have been prone to inferior displacement of the femoral head as well as varus collapse. Efforts to mitigate these untoward outcomes have led to the evolution of the Trochanteric Fixation Nail (TFN) with its helical spiral blade. The TFN has many proposed advantages such as simplified insertion, less hardware, and improved resistance to "cutout" of cephallomedullary fixation. Previous case reports have shown spiral blade perforation through the femoral head and, in some cases, into the hip. However, to our knowledge, there have not been any reports describing the advancement of the helical spiral blade into the pelvic cavity. We present a case of forward advancement of the helical spiral blade through the femoral head and acetabulum into the pelvic cavity.
不稳定的转子间和转子下骨折历史上容易导致股骨头向下移位和内翻塌陷。为了减轻这些不良后果，人们对螺旋刀片股骨近端髓内钉（PFNA）进行了改进。PFNA 具有许多优点，如简化插入、减少内固定物和提高对髓内钉头端切割的抵抗力。先前的病例报告显示螺旋刀片穿透股骨头，在某些情况下穿透髋关节。然而，据我们所知，还没有任何报告描述螺旋刀片向前推进进入盆腔。我们报告了一例螺旋刀片经股骨头和髋臼向前进入盆腔的病例。
