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 that Move the Arm01:31

Muscles that Move the Arm

5.3K
Nine muscles are involved in arm movements. Two of these, the pectoralis major and latissimus dorsi, originate from the axial skeleton and are called axial muscles. The other seven originate from the scapula and are called the scapular muscles.
The pectoralis major has two origins. Its clavicular head originates on the medial half of the clavicle. In contrast, the sternocostal head originates on the costal cartilages of ribs 1-6, the sternum, and the aponeurosis of the external oblique of the...
5.3K
Muscles of the Shoulder01:23

Muscles of the Shoulder

9.7K
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...
9.7K
Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

13.4K
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...
13.4K
Muscle Coordination and Action01:24

Muscle Coordination and Action

3.5K
Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
3.5K

You might also read

Related Articles

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

Sort by
Same author

Identifying and reprogramming softness-driven cancer stem-like cells overcomes CAR-T cell resistance in solid tumours.

Nature biomedical engineering·2026
Same author

First Evaluation of Ultrafast Ultrasound Coupled With Phrenic Stimulation for Noninvasive Diagnosis of Diaphragm Dysfunction.

Journal of cachexia, sarcopenia and muscle·2026
Same author

Biocontrol potential of endophytic bacteria against <i>Fusarium</i> wilt pathogen (<i>Fusarium</i> <i>oxysporum</i> f. sp. <i>ciceris</i>) in chickpea.

Frontiers in microbiology·2026
Same author

Assessing phenotypic diversity and trait relationships within (<i>Syzygium cumini</i> (L.) Skeels) using morpho-biochemical traits.

PeerJ·2026
Same author

Linking fruit and stone morphology with germination and polyembryony in two mango genotypes, Olour and Kurukkan.

BMC plant biology·2026
Same author

Primer PICKR: literature-mined scoring platform for robust RT-qPCR primers.

Nature communications·2026

Related Experiment Video

Updated: Mar 22, 2026

Arthroscopic Management of Massive Irreparable Rotator Cuff Tears: Whole Rotator Cable Reconstruction Using Proximal Biceps Tendon Autograft
07:22

Arthroscopic Management of Massive Irreparable Rotator Cuff Tears: Whole Rotator Cable Reconstruction Using Proximal Biceps Tendon Autograft

Published on: June 6, 2025

825

Muscle architectural changes after massive human rotator cuff tear.

Michael C Gibbons1, Eugene J Sato1, Damien Bachasson2

  • 1Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California.

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
|April 11, 2016
PubMed
Summary

Rotator cuff tears reduce muscle mass and fiber length, with massive tears causing more severe architectural changes than full-thickness tears. These changes impact muscle function and adaptability, even after repair.

Keywords:
muscle architecturemuscle mechanicsrotator cuff tearsarcomere

More Related Videos

Modified Long Head of Biceps Tendon Rerouting and Fixation as Partial Capsular Reconstruction for Massive Irreparable Rotator Cuff Tears
07:10

Modified Long Head of Biceps Tendon Rerouting and Fixation as Partial Capsular Reconstruction for Massive Irreparable Rotator Cuff Tears

Published on: March 6, 2026

327
Development of a Rabbit Chronic-Like Rotator Cuff Injury Model for Study of Fibrosis and Muscular Fatty Degeneration
05:20

Development of a Rabbit Chronic-Like Rotator Cuff Injury Model for Study of Fibrosis and Muscular Fatty Degeneration

Published on: March 31, 2023

1.9K

Related Experiment Videos

Last Updated: Mar 22, 2026

Arthroscopic Management of Massive Irreparable Rotator Cuff Tears: Whole Rotator Cable Reconstruction Using Proximal Biceps Tendon Autograft
07:22

Arthroscopic Management of Massive Irreparable Rotator Cuff Tears: Whole Rotator Cable Reconstruction Using Proximal Biceps Tendon Autograft

Published on: June 6, 2025

825
Modified Long Head of Biceps Tendon Rerouting and Fixation as Partial Capsular Reconstruction for Massive Irreparable Rotator Cuff Tears
07:10

Modified Long Head of Biceps Tendon Rerouting and Fixation as Partial Capsular Reconstruction for Massive Irreparable Rotator Cuff Tears

Published on: March 6, 2026

327
Development of a Rabbit Chronic-Like Rotator Cuff Injury Model for Study of Fibrosis and Muscular Fatty Degeneration
05:20

Development of a Rabbit Chronic-Like Rotator Cuff Injury Model for Study of Fibrosis and Muscular Fatty Degeneration

Published on: March 31, 2023

1.9K

Area of Science:

  • Orthopaedic Research
  • Muscle Physiology
  • Biomechanical Engineering

Background:

  • Rotator cuff (RC) tears cause detrimental structural and functional muscle changes.
  • Muscle architecture, key to function, is poorly understood in RC pathology.

Purpose of the Study:

  • Investigate the impact of rotator cuff tears and repair on muscle architecture.
  • Quantify changes in muscle mass, fiber length, and sarcomere properties.

Main Methods:

  • Analyzed 30 cadaveric shoulders across four groups: Intact, Full-thickness tear (FTT), Massive tear (MT), and Intervention.
  • Measured key muscle architecture parameters including mass, fiber length, sarcomere number, and sarcomere length.

Main Results:

  • Muscle mass and fiber length decreased proportionally with tear size (Intact < FTT < MT).
  • Sarcomere number reduced in FTT and MT; sarcomere length significantly decreased only in MT.
  • FTT muscle mass loss involves serial sarcomere subtraction, potentially preserving length-tension relationships.

Conclusions:

  • Massive rotator cuff tears induce severe architectural deficits, compromising force-generating capacity and muscle adaptability.
  • Architectural changes in MT suggest impaired function despite successful anatomical repair.
  • Understanding these deficits is crucial for predicting functional outcomes post-RC repair.