The Influence of Using One or Two Lag Screws on the Mechanical Environment of a Femoral Neck Fracture

نویسندگان

  • D. J Simpson
  • C. J Brown
  • A. L Yettram
  • P Procter
چکیده

Fracture healing requires two major pre-requisites; sufficient blood supply and mechanical stability [1-2]. Optimum mechanical conditions for fracture healing remain unknown, but micro-movements of the fracture fragments are significant to a developing healing callus [2-3]. This study uses Finite Element analysis to evaluate an idealized neck fracture callus, for single, and two lag screw intramedullary nails, with two load conditions.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Bilateral Simultaneous Femoral Neck and Shafts Fractures – A Case Report

  Simultaneous fractures of the femoral neck and shaft are not common injuries, though they cannot be considered rare. Herein, we report our experience with a patient with bilateral occurance of this injury. Up to the best of our knowkedge this is the first case reported in literature in which correct diagnosis was made initially. Both femurs were fixed using broad 4.5 mm dynamic compression pl...

متن کامل

Comparing Therapeutic Outcomes of Dynamic Hip Screw and Multiple Cannulated Screws as Internal Fixation in Femoral Neck Fractures

Background and purpose: Femoral neck fracture is associated with a high rate of side effects, especially in young people, who are usually affected by severe energy shocks. Results after injury depend on some factors, including displacement, fragility, bleeding rate, proper placement, and stable and strong fixation. The aim of this study was to compare dynamic hip screw (DHS) or multiple cannula...

متن کامل

Intrapelvic Protrusion of a Broken Guide Wire Fragment during Fixation of a Femoral Neck Fracture

  During fixation of a femoral neck fracture in a 23-year-old male patient with cannulated screws, a broken guide wire fragment inadvertently advanced through the hip joint and protruded into the pelvis. A second surgical approach was needed to remove the broken fragment from the pelvis. Awareness of such a potentially devastating complication will make surgeons more cautious during implementa...

متن کامل

Femoral neck fracture fixation. Comparison of a sliding screw with lag screws.

The rigidity of a sliding compression screw and three cannulated lag screws in the treatment of subcapital fractures was compared in five pairs of female cadaver femora. There were no significant differences between the compressive strength, bone density, cortical thickness or Singh index of the bones in each pair. A subcapital fracture was standardised using a perpendicular saw cut across the ...

متن کامل

Fixation of the femoral condyles: a mechanical comparison of small and large fragment screw fixation.

BACKGROUND To compare the stability achieved using two 6.5-mm screws versus two or four 3.5-mm screws for the fixation of a unicondylar distal femur fracture. METHODS A fracture model was created in femoral synthetic composite bones to simulate a lateral femoral condyle fracture (AO/OTA 33-B1). Fixation was performed using three different types of screw constructs: 1) two 6.5-mm cancellous sc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007