Pauwel's angle explained

Pauwel's angle is the angle between the line of a fracture of the neck of the femur and the horizontal as seen on an anterio-posterior radiograph.[1] Pauwel's angle is named after the German orthopedist Friedrich Pauwels.[2] Introduced in 1935, this system was the first biomechanical classification for femoral neck fractures, and is still in use.[3]

Clinical Use

An increasing angle leads to a more unstable fracture and an increase in the shear stress at the fracture site. This shear leads to higher rates of nonunion.

Pauwel's Classification

TypeAngle
I<30°
II>30°/<50°
III>50° [4]

Notes and References

  1. Web site: Joshua Blomberg. 3 July 2014. Femoral Neck Fractures. live. Orthobullets. 13 September 2021. 5 August 2020. https://web.archive.org/web/20200805223127/https://www.orthobullets.com/trauma/1037/femoral-neck-fractures.
  2. Web site: History. Unfallchirurgie Universitätsklinikum Aachen. 2014. September 4, 2014. March 5, 2016. https://web.archive.org/web/20160305051119/http://knochenfehlstellungen.de/en/about-us-en/history.html. live.
  3. Shen. Min. Wang. Chen. Chen. Hui. Rui. Yun-feng. Zhao. Song. 2016-12-12 . An update on the Pauwels classification. Journal of Orthopaedic Surgery and Research . 11 . 1 . 161. 10.1186/s13018-016-0498-3. 1749-799X. 5154085. 27955672 . free .
  4. Web site: Misinterpretation of Pauwel's Classification. Bone And Joint. 2014. October 28, 2015. https://web.archive.org/web/20151123185037/http://www.boneandjoint.org.uk/content/misinterpretation-pauwel%E2%80%99s-classification. 2015-11-23. dead.

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