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Related Concept Videos

Self-Locking Screw01:16

Self-Locking Screw

A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
Frictional Forces on Screws01:17

Frictional Forces on Screws

Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...

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Related Experiment Video

Updated: May 10, 2026

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
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Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Published on: June 6, 2025

[Dynamic locking screw 5.0--first clinical experience].

T Freude1, S Schröter, T M Kraus

  • 1Klinik für Unfall- und Wiederherstellungschirurgie, Eberhard-Karls-Universität Tübingen, BG Unfallklinik Tübingen, Schnarrenbergstraße 95, Tübingen. tfreude@bgu-tuebingen.de

Zeitschrift Fur Orthopadie Und Unfallchirurgie
|June 18, 2013
PubMed
Summary
This summary is machine-generated.

The dynamic locking screw (DLS) enhances fracture healing by optimizing mechanical and biological interactions in plate osteosynthesis. This innovative fixation allows controlled fracture motion, promoting secondary bone healing without compromising angular stability.

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Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Trauma management

Background:

  • Biological plate osteosynthesis aims for optimal fracture healing through mechanical and biological synergy.
  • Maintaining soft tissue and blood supply is crucial for secondary bone healing.
  • Excessively rigid internal fixation can inhibit callus formation, hindering fracture consolidation.

Purpose of the Study:

  • To evaluate the clinical efficacy and safety of the dynamic locking screw (DLS) in large fragment plate osteosynthesis.
  • To assess the impact of DLS on fracture healing and mechanical stability.
  • To compare the handling and complication profile of DLS with conventional locking screws (LS).

Main Methods:

  • A clinical study involving 35 patients treated with DLS5.0 at the Trauma Centre Tuebingen between November 2011 and October 2012.
  • Application of large fragment DLS for plate osteosynthesis.
  • Evaluation of clinical outcomes, handling characteristics, and complications.

Main Results:

  • The dynamic locking screw (DLS) allows for reduced plate osteosynthesis rigidity, positively influencing fracture motion.
  • Angular stability advantages are maintained with DLS.
  • Initial clinical cases demonstrated good results with DLS5.0, comparable handling to LS5.0, and no DLS-related complications.

Conclusions:

  • The dynamic locking screw (DLS) represents a promising advancement in achieving biological plate osteosynthesis.
  • DLS facilitates secondary bone healing by allowing controlled micromotion while preserving angular stability.
  • Early clinical experience suggests DLS is safe and effective for large fragment osteosynthesis.