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Cranial Bones: Lateral View01:27

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
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Angular momentum is directed perpendicular to the plane of the rotation, and its magnitude depends on the choice of the origin. The perpendicular vector joining the linear momentum vector of an object to the origin is called the “lever arm.” If the lever arm and linear momentum are collinear, then the magnitude of the angular momentum is zero. Therefore, in this case, the object rotates about the origin such that it lies on the rim of the circumference defined by the lever arm...
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Integral membrane proteins are tightly associated with the cell membrane and play a crucial role in cell communication, signaling, adhesion, and transport of the molecules. Some integral membrane proteins are present only in the membrane monolayer. For example, the enzyme fatty acid amide hydrolase is present in the cytoplasmic side of the membrane monolayer. In contrast, another type of integral membrane protein, also known as a transmembrane protein, spans across the membrane. Transmembrane...
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Related Experiment Video

Updated: Feb 2, 2026

The Modified Single-working Portal Technique Using Lasso-loop Stitch with Needle for Arthroscopic Subscapularis Repair
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The Modified Single-working Portal Technique Using Lasso-loop Stitch with Needle for Arthroscopic Subscapularis Repair

Published on: August 8, 2025

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Single-Needle Lateral Sacroplasty Technique.

P J Nicholson1, C A Hilditch2, W Brinjikji2

  • 1From the Division of Neuroradiology (P.J.N., C.A.H., W.B., A.C.O.T., R.S.), Joint Department of Medical Imaging, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada paddynicholson@gmail.com.

AJNR. American Journal of Neuroradiology
|November 17, 2018
PubMed
Summary
This summary is machine-generated.

Percutaneous sacroplasty offers a promising treatment for sacral insufficiency fractures. A novel "single-needle" lateral technique significantly reduced pain scores in 10 patients, demonstrating feasibility and safety.

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Area of Science:

  • Orthopedics
  • Interventional Radiology

Background:

  • Sacral insufficiency fractures cause significant morbidity.
  • Percutaneous sacroplasty is a developing treatment option.

Observation:

  • A novel "single-needle" lateral technique was employed.
  • Treatment utilized cone-beam CT and biplane fluoroscopy.

Findings:

  • Ten patients were treated with the single-needle technique.
  • Median Visual Analog Scale pain scores decreased from 7.0 to 0 (P < .001).

Implications:

  • The single-needle sacroplasty technique is feasible.
  • This approach is safe for treating sacral insufficiency fractures.