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 Experiment Videos

Coracoacromial pressure recordings in a cadaveric model

N Wuelker1, B Roetman, S Roessig

  • 1Orthopaedic Department, Hannover Medical School, Germany.

Journal of Shoulder and Elbow Surgery
|November 1, 1995
PubMed
Summary

This study reveals how rotator cuff muscle forces influence shoulder pressures under the acromion. Weakening specific rotator cuff muscles significantly alters pressure distribution, impacting shoulder biomechanics.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Horse-related injury patterns: a single center report.

Journal of orthopaedic surgery and research·2023
Same author

[Precise sacroiliac joint screw insertion without computed tomography, digital volume tomography or navigation systems].

Operative Orthopadie und Traumatologie·2019
Same author

[Acute exacerbation of chronic CLL with multiple pathological fractures : A rarity].

Der Unfallchirurg·2018
Same author

[Lumbopelvic stabilization for bilateral lumbosacral instabilities: indications and techniques].

Der Unfallchirurg·2013
Same author

[The pressure-sensitive swelling in the knee as a sign for a monoclonal gammopathy of undetermined specificity (MGUS)].

Zeitschrift fur Orthopadie und Unfallchirurgie·2012
Same author

Passive glenohumeral joint stabilization: A biomechanical study.

Journal of shoulder and elbow surgery·2012

Area of Science:

  • Biomechanics
  • Orthopedic Surgery
  • Human Anatomy

Background:

  • The subacromial space is critical for shoulder function.
  • Understanding pressure distribution within this space is key to diagnosing and treating shoulder impingement syndrome.

Purpose of the Study:

  • To quantify pressure distribution under the acromion, coracoacromial ligament, and coracoid process during simulated active glenohumeral motion.
  • To investigate the effect of isolated and combined rotator cuff muscle force deficits on these pressures.
  • To assess the impact of anterior acromioplasty on coracoacromial pressures.

Main Methods:

  • A dynamic shoulder model with cadaveric specimens was utilized.
  • Computer-controlled servo-actuators simulated active glenohumeral joint motion.

Related Experiment Videos

  • Capacitive sensors recorded pressure distribution, with specific focus on peak pressures and locations.
  • Rotator cuff muscle forces were systematically simulated as absent to evaluate pressure changes.

    • Main Results:

    • Peak pressures averaged 56.6 N/cm2, predominantly at the anterolateral acromion.
    • Absence of supraspinatus force decreased coracoacromial pressures by 8%.
    • Absence of subscapularis and infraspinatus/teres minor forces increased coracoacromial pressures by 61%.
    • Absence of all rotator cuff forces increased pressures by 35%.
    • Anterior acromioplasty resulted in a 5% decrease in mean coracoacromial pressures.

    Conclusions:

    • Rotator cuff muscle integrity significantly modulates pressure distribution in the subacromial space.
    • Deficits in specific rotator cuff muscles, particularly the subscapularis and infraspinatus/teres minor, lead to substantial increases in pressure.
    • Anterior acromioplasty shows a modest reduction in coracoacromial pressures.