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Related Concept Videos

Anatomical Positions01:11

Anatomical Positions

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In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
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Anatomical Terminology01:20

Anatomical Terminology

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Knowledge of anatomy is essential to understand human biology and medicine. Anatomists and health care professionals use standard terminology to describe the human body with more precision and no ambiguity. Anatomical terms have mostly Greek and Latin-derived roots. Because these languages are rarely used in conversation, the meaning of words remains the same. Each term is made up of a root in between the prefixes and suffixes. The root of a term often refers to an organ, tissue, or condition,...
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Anatomical Movements00:51

Anatomical Movements

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Anatomical movements refer to the various actions or motions that can be performed by the body's joints and muscles. These movements are described using specific terms to provide a standardized way of discussing and understanding the range of motion at different joints.
Here are some common anatomical movements:
Flexion and extension motions are in the sagittal (anterior–posterior) plane of motion. These movements take place at the shoulder, hip, elbow, knee, wrist,...
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Group Design02:01

Group Design

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The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...
10.3K
Cerebrum: Anatomical Overview II01:11

Cerebrum: Anatomical Overview II

4.6K
Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
4.6K
Diencephalon: Anatomical Regions01:30

Diencephalon: Anatomical Regions

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The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the...
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Related Experiment Video

Updated: Jan 26, 2026

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis
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Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis

Published on: October 12, 2016

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New Design Process for Anatomically Enhanced Osteosynthesis Plates.

Luisa Tkany1,2, Bernhard Hofstätter1, Andreas Petersik1

  • 1Stryker Trauma GmbH, Professor Küntscher-Straße 1-5, 24232, Schönkirchen, Germany.

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
|April 13, 2019
PubMed
Summary
This summary is machine-generated.

This study improved osteosynthesis plate fit for metacarpal fractures using virtual tools. An iterative design process achieved optimal anatomical fit within two enhancements, meeting clinical and engineering needs.

Keywords:
3D bone databaseanatomical designmetacarpal 5 fractureosteosynthesis plateshape enhancement

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Area of Science:

  • Orthopaedic biomechanics
  • Medical device design
  • Computational anatomy

Background:

  • Osteosynthesis plates are crucial for metacarpal fracture fixation.
  • Achieving optimal anatomical fit for implants is clinically significant.
  • Current methods may lack precision in evaluating plate-bone conformity.

Purpose of the Study:

  • To evaluate an iterative process for enhancing osteosynthesis plate fit.
  • To quantify anatomical fit using a shape-based acceptance criterion (SAC).
  • To develop a methodology applicable to other bone fixation designs.

Main Methods:

  • Utilized a virtual process with 3D bone models and statistical analysis.
  • Employed proprietary software to assess plate-bone conformity.
  • Quantified fit using mean between plate and bone (MBP) distance.

Main Results:

  • The iterative process successfully enhanced plate design.
  • The third plate design iteration met the SAC threshold.
  • Median MBP decreased below the defined acceptance criterion.

Conclusions:

  • An iterative, virtual approach effectively improves osteosynthesis plate anatomical fit.
  • The developed process provides a guideline for designing patient-specific implants.
  • This methodology can be adapted for various orthopaedic fixation applications.