Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Screw: Problem Solving01:21

Screw: Problem Solving

In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
Frictional Forces on Screws01:17

Frictional Forces on Screws

Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Transport Coherence Loss in Heterogeneous Forward Osmosis Membranes: A Hierarchical Diagnostic Framework.

Membranes·2026
Same author

Tunable Lower Critical Fractal Dimension for a Nonequilibrium Phase Transition.

Physical review letters·2026
Same author

Exact Duality at Low Energy in a Josephson Tunnel Junction Coupled to a Transmission Line.

Physical review letters·2026
Same author

Early Wound Healing After Chlorhexidine Rinsing in Third Molar Surgery: A Randomized Clinical Trial.

Oral diseases·2026
Same author

From Feasibility to Individualization: Surgery for Breast Cancer Liver and Lung Metastases.

Cancers·2026
Same author

Ultrasonographic features of gingival tissue in health and gingivitis.

Journal of periodontology·2026

Related Experiment Video

Updated: Jun 8, 2026

An Anesthesia, Surgery, and Harvest Method for the Evaluation of Transpedicular Screws Using an In Vivo Porcine Lumbar Spine Model
09:07

An Anesthesia, Surgery, and Harvest Method for the Evaluation of Transpedicular Screws Using an In Vivo Porcine Lumbar Spine Model

Published on: May 31, 2017

Insertion torque in different bone models with different screw pitch: an in vitro study.

Bruno Orlando1, Antonio Barone, Thierry M Giorno

  • 1Nanoworld Institute, University of Genoa, Italy. orlando@istitutostomatologicotirreno.it

The International Journal of Oral & Maxillofacial Implants
|September 24, 2010
PubMed
Summary

Fine-pitch screws are best for dense cortical bone, while wide-pitch screws are better for softer cancellous bone. This study validates screw pitch selection for optimal bone implant stability.

More Related Videos

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
11:51

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage

Published on: February 10, 2014

A Minimally Invasive Model to Analyze Endochondral Fracture Healing in Mice Under Standardized Biomechanical Conditions
06:41

A Minimally Invasive Model to Analyze Endochondral Fracture Healing in Mice Under Standardized Biomechanical Conditions

Published on: March 22, 2018

Related Experiment Videos

Last Updated: Jun 8, 2026

An Anesthesia, Surgery, and Harvest Method for the Evaluation of Transpedicular Screws Using an In Vivo Porcine Lumbar Spine Model
09:07

An Anesthesia, Surgery, and Harvest Method for the Evaluation of Transpedicular Screws Using an In Vivo Porcine Lumbar Spine Model

Published on: May 31, 2017

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
11:51

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage

Published on: February 10, 2014

A Minimally Invasive Model to Analyze Endochondral Fracture Healing in Mice Under Standardized Biomechanical Conditions
06:41

A Minimally Invasive Model to Analyze Endochondral Fracture Healing in Mice Under Standardized Biomechanical Conditions

Published on: March 22, 2018

Area of Science:

  • Orthopedic biomechanics
  • Biomaterials engineering

Background:

  • Bone fixation screws vary in pitch for different bone types.
  • Fine-pitch screws suit hard cortical bone, while wide-pitch screws may enhance stability in softer cancellous bone.

Purpose of the Study:

  • To validate the suitability of fine-pitch implants for cortical bone.
  • To validate the suitability of wide-pitch implants for cancellous bone.

Main Methods:

  • Experimental polyurethane foam blocks simulated hard (D1-D2) and soft (D3-D4) bone.
  • Implants with wide and fine pitches were inserted using 1.5-mm and 2.5-mm drills.
  • Insertion torque was measured to assess implant suitability.

Main Results:

  • Wide-pitch implants showed 20% greater insertion torque in simulated cancellous bone.
  • This indicates superior suitability of wide-pitch designs for softer bone types.

Conclusions:

  • Fine-pitch implants with 2.5-mm osteotomy are recommended for dense cortical bone (D1-D2).
  • Wide-pitch implants with 1.5-mm osteotomy are recommended for softer bone (D3-D4).
  • Appropriate screw pitch selection enhances implant stability in orthopedic surgery.