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Orthogonal bone cutting: saw design and operating characteristics.

W R Krause1

  • 1Department of Biomedical Engineering, Virginia Commonwealth University, Medical College of Virginia, Richmond 23298.

Journal of Biomechanical Engineering
|August 1, 1987
PubMed
Summary

Orthopaedic bone saw cutting forces are minimized using negative rake angles (0 to -10 degrees), high feed velocity, and lateral vibration. These factors significantly reduce cutting forces and energy expenditure during bone surgery.

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Area of Science:

  • Orthopaedic surgery
  • Biomaterials engineering
  • Manufacturing processes

Background:

  • Orthopaedic bone saws are critical surgical tools.
  • Understanding cutting forces is essential for optimizing surgical outcomes and tool longevity.
  • Current research lacks comprehensive analysis of cutting parameters on bone saw performance.

Purpose of the Study:

  • To analyze the orthogonal cutting process of orthopaedic bone saws.
  • To determine the influence of rake angle and feed velocity on cutting forces.
  • To investigate the effect of lateral vibration on cutting efficiency.

Main Methods:

  • Orthogonal cutting analysis was employed for two-dimensional force determination.
  • Merchant analysis was used to calculate resultant forces and work relationships.

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  • Experimental tests were conducted with varying rake angles (0 to -30 degrees) and feed velocities, including imposed lateral vibration.

    • Main Results:

    • A significant interaction was observed between cutting forces, rake angle, and feed velocity.
    • Negative rake angles between 0 and -10 degrees showed a reduction in cutting forces.
    • Imposed lateral vibration further decreased force and energy expenditure.

    Conclusions:

    • Optimal cutting parameters for reducing force and energy include negative rake angles (0 to -10 degrees), high feed velocity, and lateral vibration.
    • These findings can guide the design and operation of bone saws for improved surgical efficiency.
    • Minimizing cutting forces may lead to reduced tissue damage and faster patient recovery.