Biomechanical evaluation of the schuhli nut.

  title={Biomechanical evaluation of the schuhli nut.},
  author={Patricia Kolodziej and Frank S Lee and Ashit Patel and S S Kassab and Kevin Lu Shen and Kyu Hyun Yang and Jeffery W Mast},
  journal={Clinical orthopaedics and related research},
The schuhli out is a device designed to lock an AO 4.5-mm cortical screw to a 4.5-mm dynamic compression plate independent of bony contact with the plate. The nut engages the screw below the plate, elevating the plate, and locking the screw at a 90 degrees angle, thus preventing toggling. Photoelastic modeling and biomechanical testing on sheep tibias were done to determine the mechanical properties of constructs using schuhli nuts. Use of schuhli nuts was shown to decrease stress in the bone… CONTINUE READING