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Frames

Frames

Frames are essential components of various mechanical and structural systems used daily. These structures are known for their stability and ability to bear heavy loads. A frame is constructed using two-force and multi-force members, interconnected using pin joints. In contrast, trusses are made entirely of two-force members.
Frames are versatile and widely used in various applications such as structural supports for beams and columns, automobile chassis construction, and in the construction...

Inertial Frames of Reference

Inertial Frames of Reference

Newton’s first law is usually considered to be a statement about reference frames. It provides a method for identifying a special type of reference frame: the inertial reference frame. In principle, we can make the net force on a body zero. If its velocity relative to a given frame is constant, then that frame is said to be inertial. So, by definition, an inertial reference frame is a reference frame where Newton's first law holds valid. Newton's first law applies to objects with constant...

Non-inertial Frames of Reference

Non-inertial Frames of Reference

A reference frame accelerating or decelerating relative to an inertial frame is a non-inertial frame. To help understand this, consider what taking off in an airplane, turning a corner in a car, riding a merry-go-round, and the circular motion of a tropical cyclone all have in common. All these systems are accelerating, decelerating, or rotating relative to the Earth; hence, they all are non-inertial frames. All these systems exhibit inertial forces, which merely seem to arise from motion,...

Framing Effects

Framing Effects

Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in different ways based on the...

Frames: Problem Solving II

Frames: Problem Solving II

Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.

Space Trusses: Problem Solving

Space Trusses: Problem Solving

A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...

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Related Experiment Video

Updated: Jun 21, 2026

Magnetic Resonance-Guided Stereotaxy for Infusions to the Pig Brain

Magnetic Resonance-Guided Stereotaxy for Infusions to the Pig Brain

Published on: March 31, 2023

A guide frame for the Taylor Spatial Frame.

Anastasios D Kanellopoulos¹, Andreas F Mavrogenis, Nikolaos D Kanellopoulos

¹First Department of Orthopaedics, Athens University Medical School, 5 Sikelianou Str., 14671 Nea Erithraia, Athens, Greece. adkanell@yahoo.com

Journal of Orthopaedic Trauma

|July 28, 2009

Summary

A new guiding frame improves accuracy for the Taylor Spatial Frame (TSF) by ensuring correct X-ray angles. This technique reduces repeat radiation exposure for patients and staff during orthopaedic surgery.

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Area of Science:

Orthopaedic Surgery
Medical Imaging
Biomechanical Engineering

Background:

The Taylor Spatial Frame (TSF) is a key tool in reconstructive orthopaedic surgery for fracture reduction and deformity correction.
Accurate post-application adjustments of the TSF rely on precise anteroposterior and lateral radiographic measurements.
Current methods require radiographs to be orthogonal to the reference ring, which can be challenging to achieve consistently.

Purpose of the Study:

To introduce a novel, noninvasive technique to improve the accuracy of radiographic measurements for the Taylor Spatial Frame (TSF).
To describe a specifically designed radiolucent guiding frame that facilitates orthogonal radiographic views.
To enhance the precision of TSF corrections by ensuring consistent imaging parameters.

Main Methods:

Development and application of a radiolucent guiding frame attachable to the TSF.
Utilizing the frame to ensure the reference ring is perfectly orthogonal in single exposures for lateral and anteroposterior radiographs.
Guiding surgeons and radiologists in obtaining consistently oriented X-rays during TSF adjustments.

Main Results:

The guiding frame enables reproducible and consistent X-rays oriented orthogonally to the TSF reference ring.
Eliminates the need for repeat radiographs, thereby reducing radiation exposure for patients, radiologists, and surgeons.
Ensures consistent mounting parameters and bony deformity orientation for enhanced correction accuracy.

Conclusions:

The described guiding frame technique significantly improves the accuracy of TSF applications in orthopaedic surgery.
This method offers a practical solution for obtaining precise radiographic views, optimizing TSF performance.
Reduced radiation exposure and enhanced accuracy contribute to better patient outcomes in complex reconstructive procedures.