<prompt> Pauwels classification is used for: March 2013 aFracture scaphoidFracture neck of radiusFracture neck of femurFracture neck of talus  <response>: Ans. C i.e. Fracture neck of femur Classification Type I: Pauwels angle less than 30 degrees Type II: Pauwels angle between 30 and 70 degrees Type III: Pauwels angle more than 70 degrees Explanation Pauwels observed that the obliquity of the fracture line with the horizontal plane significantly affected the prognosis of the fracture. The angle formed by extending the fracture line upwards to meet an imaginary horizontal line drawn through the transtubercular iliac crest plane on AP film is described as Pauwels angle. The higher the value of this angle, the greater is the instability of the fracture. 