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Related Concept Videos

Introduction to Global Positioning System01:30

Introduction to Global Positioning System

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The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
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Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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Compass01:23

Compass

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The compass is a fundamental instrument that operates by aligning its magnetic needle with Earth's magnetic field. This alignment facilitates navigation and orientation, offering a means to determine direction relative to magnetic north. However, the magnetic needle points to magnetic north, which differs slightly from true geographic north due to magnetic declination, which is the angular deviation between these two points. Declination varies based on geographic location and shifts over time...
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Errors in Global Positioning System01:26

Errors in Global Positioning System

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Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
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Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

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GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
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Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

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Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
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[Trends in navigation-handheld systems].

Holger Bäthis1,2, Lars Perlick3,4, Johannes Beckmann3,5

  • 1Lehrstuhl für Orthopädie für die Universität Regensburg, Asklepios Klinikum Bad Abbach, Bad Abbach, Deutschland. holger.baethis@web.de.

Orthopadie (Heidelberg, Germany)
|January 8, 2024
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Summary
This summary is machine-generated.

Handheld navigation systems offer cost-effective, specialized surgical assistance in orthopedics. This overview details current handheld navigation technologies for knee and hip replacements and spinal surgery.

Keywords:
Computer-assisted surgeryOutliersSpineTotal hip arthroplastyTotal knee replacement

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Area of Science:

  • Orthopedic Surgery
  • Surgical Navigation
  • Medical Technology

Context:

  • Navigation-assisted surgical procedures are increasingly common in orthopedics and trauma surgery.
  • Applications span spinal surgery, knee endoprosthetics (TKA), and hip endoprosthetics (THA).
  • Recent advancements include robotic assistance and the development of handheld navigation systems for lower-cost, intraoperative use.

Purpose:

  • To provide an overview of current handheld navigation systems in orthopedic surgery.
  • To describe the technical principles behind these systems.
  • To present available scientific results for these technologies.

Summary:

  • The overview presents three handheld systems for total knee arthroplasty (TKA).
  • It also details two handheld systems for total hip arthroplasty (THA).
  • One handheld system for supporting pedicle screw placement in spinal surgery is also discussed.

Impact:

  • Highlights the growing role and accessibility of navigation technology in orthopedic procedures.
  • Informs surgeons about available handheld options for improved surgical precision.
  • Facilitates understanding of the technical basis and evidence supporting these emerging tools.