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Related Experiment Videos

Miniplate washers for improving lag screw fixation.

G G Hallock1

  • 1Division of Plastic Surgery, Allentown Hospital and Lehigh Valley Hospital Center, PA.

Annals of Plastic Surgery
|November 1, 1990
PubMed
Summary
This summary is machine-generated.

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A biocompatible metallic washer disperses screw head compression forces, improving bone fixation efficiency for fragile grafts. These washers can be fashioned from miniplate remnants when not commercially available.

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Surgical instrumentation

Background:

  • The lag screw principle is crucial for rigid bone fixation.
  • Fragile bone grafts (cortical or cancellous) present challenges for fixation.
  • Current methods lack efficient force dispersion at the screw head.

Purpose of the Study:

  • To enhance the efficiency of the lag screw principle in bone fixation.
  • To address the fixation challenges associated with fragile bone grafts.
  • To introduce a method for dispersing screw head compression forces.

Main Methods:

  • Utilizing a biocompatible metallic washer to disperse screw head compression forces.
  • Fashioning custom washers from residual adaptation miniplates.

Related Experiment Videos

  • Applying the washer during the lag screw fixation procedure.

    • Main Results:

    • Increased efficiency in rigid fixation of bone, especially for fragile grafts.
    • Effective dispersion of screw head compression forces.
    • Practical in-situ fabrication of necessary washers from readily available materials.

    Conclusions:

    • Biocompatible metallic washers significantly improve lag screw fixation for fragile bone.
    • Custom washers can be rapidly fabricated from miniplate remnants.
    • This approach offers a viable solution for enhanced orthopedic fixation.