Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2014 Sep;2(3):215-9.
Epub 2014 Sep 15.

A Comparison of Glenohumeral Internal and External Range of Motion and Rotation Strength in healthy and Individuals with Recurrent Anterior Instability

Amirreza Sadeghifar  1 , Shahab Ilka  1 , Hasan Dashtbani  1 , Mansour Sahebozamani  1
Affiliations

A Comparison of Glenohumeral Internal and External Range of Motion and Rotation Strength in healthy and Individuals with Recurrent Anterior Instability

Amirreza Sadeghifar et al. Arch Bone Jt Surg. 2014 Sep.

Abstract

Background: The glenohumeral joint becomes dislocated more than any other major joint because it maintains a wide range of motion and its stability is inherently weak. The most common complication following acute initial shoulder dislocation is recurrent dislocation or chronic instability. Imbalance of strength and range of motion in individuals with anterior dislocation can be a contributing factor in recurrent dislocation as well.

Methods: This case-control study consisted of 24 individuals with a mean age of 24.29±4.33 years, and a mean dislocation rate of 5.37±3.62 times. Isometric cuff strength was measured using a handheld dynamometer and for range of motion, the Leighton flexometer was used in internal and external rotational motions of both upper extremities. Independent t-test was used for data analysis.

Results: The internal and external range of motion of the injured glenohumeral joint was lower than the uninjured joint (P<0.001). Similarly, the internal and external rotation strength of the injured joint was lower than the uninjured joint (P<0.001).

Conclusions: According to previous data, imbalance of strength and range of motion in individuals with anterior shoulder dislocation can be a contributing factor in long-term disability and increased recurrent dislocation and our finding confirm decreased range of motion and strength in our patients. Hence, proper exercise and rehabilitation plans need to be developed for those suffering from this complication.

Keywords: Anterior shoulder instability; Glenohumeral joint; Range of motion; Strength.

PubMed Disclaimer

Figures

Figure 1 and 2.
Figure 1 and 2.
Measuring the internal rotation range of motion of the glenohumeral joint.
Figure 3.
Figure 3.
Measuring the external rotation range of motion of the glenohumeral joint.
Figure 4.
Figure 4.
Measuring the internal rotation strength of the glenohumeral joint.
Figure 5.
Figure 5.
Measuring the external rotation strength of glenohumeral joint.
Figure 6.
Figure 6.
Internal and external range of motion in injured and uninjured shoulder.
Figure 7.
Figure 7.
Internal and external strength in injured and uninjured shoulder.
See this image and copyright information in PMC

References

    1. Mehdi nasab A, Marashi A, Sarrafan N. Recurrent Anterior Shoulder Dislocation (Results with “Bristow” Procedure) Iranian J Orthopedic Surgery. 2007;5(1):11–6. [Persian]
    1. Rouhani AR, Elmi A. Treatment of Anterior Shoulder Instability with Inside-to-Out Technique. Scientific Journal of Hamadan University of Medical Sciences and Health Services. 2010;16(4):42–8. [Persian]
    1. Charehsaze S, Shahla A. A Case Report Bilateral Post Traumatic Anterior Shoulder Dislocation. Urmia Medical Journal. 2009;19(4):346–8. [Persian]
    1. Mohammadi R, Nodehi Moghaddam A, Arab AM, Kazemnezhad A. Shoulder key exercise effect of on isometric torque of glenohumeral joint movements in healthy young females. J of rehabilitation. 2009;10(2):38–44. [Persian] - PubMed
    1. Kibler WB, Sciascia A, Dome D. Evaluation of apparent and absolute supraspinatus strength in patients with shoulder injury using the scapular retraction test. Am J Sport Med. 2006;34(10):1643–7. - PubMed

LinkOut - more resources