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

Muscles of the Shoulder01:23

Muscles of the Shoulder

The muscles surrounding the shoulder girdle, including the clavicle and scapula, primarily stabilize the scapula. This stable base allows other muscles to move the humerus effectively. Scapular movements often mirror those of the humerus and extend its range of motion. For instance, raising the arm above the head would not be feasible without simultaneous upward rotation of the scapula.
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...
Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
Stability of structures01:14

Stability of structures

In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
Articulations of the Vertebral Column01:28

Articulations of the Vertebral Column

In addition to being held together by the intervertebral discs, adjacent vertebrae also articulate with each other at synovial joints formed between the superior and inferior articular processes called zygapophysial joints (facet joints). These are plane joints that provide for only limited motions between the vertebrae. The orientation of the articular processes at these joints varies in different regions of the vertebral column and serves to determine the types of motions available in each...

You might also read

Related Articles

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

Sort by
Same author

Efficacy of Proximal Resin Infiltration on Caries Inhibition: Results from a 3-Year Randomized Controlled Clinical Trial.

Journal of dental research·2019
Same author

A comparative study of the effects of different bioactive fillers in PLGA matrix composites and their suitability as bone substitute materials: A thermo-mechanical and in vitro investigation.

Journal of the mechanical behavior of biomedical materials·2015
Same author

A numerical tool for the reconstruction of the physiological kinematics of the glenohumeral joint.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine·2009
Same author

Minimal-resection arthroplasty to treat meniscal tears with associated condyle lesions: finite element analysis.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine·2009
Same author

Detection and classification characteristics of arrays of carbon black/organic polymer composite chemiresistive vapor detectors for the nerve agent simulants dimethylmethylphosphonate and diisopropylmethylphosponate.

Analytical chemistry·2001
Same author

The use of ceramic orthodontic brackets as rest seats for removable partial dentures.

Journal of prosthodontics : official journal of the American College of Prosthodontists·1995

Related Experiment Video

Updated: Jun 18, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Primary stability in reversed-anatomy glenoid components.

A R Hopkins1, U N Hansen

  • 1Biomechanics Section, Department of Mechanical Enghineering, Imperial College London, London, UK.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
|November 14, 2009
PubMed
Summary
This summary is machine-generated.

Reversed-anatomy shoulder replacements offer stability for rotator cuff issues. The Zimmer Anatomical implant showed superior initial stability at a 30-micrometer threshold, while the Biomet Verso excelled at 50 micrometers.

More Related Videos

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

Related Experiment Videos

Last Updated: Jun 18, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering
  • Medical Device Design

Background:

  • Reversed-anatomy shoulder replacement is indicated for patients with irreparable rotator cuff tears, where anatomical implants lack stability.
  • Modern reversed-anatomy designs demonstrate promising short-to-midterm clinical outcomes.
  • Non-cemented glenoid implants require high primary stability for bone ingrowth and long-term fixation.

Purpose of the Study:

  • To compare the primary stability of six different commercially available reversed-anatomy glenoid implants.
  • To evaluate implant stability based on minimizing interface micromotion and predicting bone on-growth.
  • To assess the influence of micromotion thresholds on predicted bone ingrowth.

Main Methods:

  • Finite element analysis was used to compare six inverse-anatomy glenoid implants.
  • Interface micromotions were analyzed under simulated surgical conditions, with screws angled at up to 30 degrees.
  • Predicted bone on-growth was determined based on varying micromotion thresholds (30 µm and 50 µm).

Main Results:

  • At a 30 µm micromotion threshold, the Zimmer Anatomical implant demonstrated the highest stability, predicting 3% more bone on-growth than the Biomet Verso.
  • At a 50 µm micromotion threshold, the Biomet Verso implant was most stable, outperforming the Zimmer Anatomical by 3%.
  • Peak micromotions were unreliable indicators of overall implant performance and predicted bone on-growth.

Conclusions:

  • Glenoid implant design significantly impacts primary stability and predicted bone on-growth in reversed-anatomy shoulder replacements.
  • The optimal implant choice may depend on the acceptable micromotion threshold for bone ingrowth.
  • Most tested implants achieved primary stability sufficient to resist motions exceeding 150 µm, crucial for initial fixation.