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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.
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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
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[Midcarpal fusion using break-away compression screw].

N Maire1, S Facca, S Gouzou

  • 1Service de chirurgie de main, centre de chirurgie orthopédique et de main, hôpitaux universitaires de Strasbourg, 10, avenue Achille-Baumann, 67403 Illkirch cedex, France.

Chirurgie De La Main
|January 17, 2012
PubMed
Summary
This summary is machine-generated.

Break-away compression screws offer a promising solution for midcarpal fusion, significantly improving patient outcomes and reducing non-union rates. This technique avoids bone grafts and demonstrates good cost-effectiveness.

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Area of Science:

  • Orthopedic surgery
  • Hand and wrist surgery

Context:

  • Scaphoid non-union advanced collapse (SNAC) and scaphoid-lunate advanced collapse (SLAC) wrist grade 3 indicate midcarpal fusion.
  • Circular plates are a common technique but have a high non-union rate.

Purpose:

  • To evaluate the efficacy of break-away compression screws in reducing non-union rates for midcarpal fusion.
  • To assess functional and subjective outcomes following this surgical technique.

Summary:

  • Ten patients underwent midcarpal fusion using two 2mm break-away compression screws via a dorsal approach, without bone grafting.
  • Postoperative assessment included subjective (pain, Quick-DASH) and objective (strength, mobility) criteria.
  • Significant improvements were observed in pain and Quick-DASH scores, alongside enhanced strength, though mobility did not improve significantly. One case of delayed union resolved well.

Impact:

  • Break-away compression screws present a viable, cost-effective alternative for midcarpal fusion.
  • This technique potentially lowers non-union rates compared to traditional methods.
  • It offers a bone graft-free solution with favorable patient outcomes.