Relation Between Scapular Dyskinesia, Rotator Cuff Strength And Subacromial Space In Asymptomatic Scapular Dyskinesia (ASD)

This study will be conducted to investigate the relationship between scapular dyskinesia and rotator cuff muscle strength and acromiohumeral distance in asymptomatic individuals.

Study Overview

• Status: Not yet recruiting
• Conditions: Scapular Dyskinesis
• Intervention / Treatment: Other: asymptomatic scapular dyskinesia group

Detailed Description

When the scapula moves in an abnormal way, a condition known as scapular dysfunction (SD) occurs, leading to shoulder pain and dysfunction. It is possible for patients with SD to experience no symptoms at all. SD symptoms can include a combination of the following anterior shoulder pain, Posterosuperior scapular pain, Superior shoulder pain, shoulder impingement syndrome, rotator cuff dysfunction, and shoulder instability.Things like early scapular elevation, abrupt downward rotation, and a prominent medial edge and inferior angle of the scapula are seen during shoulder motions. It has been suggested that impaired scapulothoracic musculature function might lead to changes in shoulder kinematics, which in turn can increase the risk of injury.Individuals with SD often experience pathologies such as scapula-humeral rhythm disturbance, glenoid labrum difficulties, glenohumeral instability, rotator cuff syndrome, subacromial impingement syndrome, and glenoid labrum abnormalities. In individuals suffering from RC tendinopathy, a decline in RC muscle performance is associated with lower health-related quality of life and patient-rated function. In order to determine which patients with scapular dyskinesis may benefit most from a rehabilitation program aimed at enhancing muscular performance, clinicians may find it useful to gather data on shoulder strength. A portable dynamometer is an easy, cheap, and valid way to get these kinds of data. to fill that gap in literature by Finding an association between scapular dyskinesia and the acromiohumeral distance and rotator cuff muscle strength in individuals with asymptomatic scapular dyskinesia

• Study Type: Observational
• Enrollment (Estimated): 51

Contacts and Locations

• Study Contact: Name: Aya mostafa, master; Phone Number: 01142667586; Email: ayaphysicaltherapy2020@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Fifty-one subjects with asymptomatic scapular dyskinesia, their ages ranging from eighteen to forty years. subjects showed an opposite result on lateral scapular slide test and with a visual-based palpation method

Description

Inclusion Criteria:

• Both genders.
• Those experiencing asymptomatic scapular dyskinesia
• The average age of the population ranges from eighteen to forty years.
• Individuals who showed appositive result on lateral scapular slide test and with a visual-based palpation method
• Type 2 and 3 scapular dyskinesia

Exclusion Criteria:

• any type of injury or pain affecting the neck, shoulders, or cervical region
• Participating in any form of formal athletic training or fitness program with their express written approval
• If they had previously suffered an injury to their upper limbs, such as a dislocation, fracture, or strain

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
asymptomatic scapular dyskinesia group; fifty-one asymptomatic scapular dyskinesia subjects will be included	Other: asymptomatic scapular dyskinesia group; From both genders, fifty-one asymptomatic scapular dyskinesia subjects were included in this group. their ages from eighteen to forty years. Subjects showed an opposite result on the lateral scapular slide test.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
subacromial space	The subacromial space will be measured by ultrasonography device with mm or cm. it was defined as the linear perpendicular distance between the top surface of the humeral head and the lower surface of the acromion	up to one day

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
shoulder internal rotator muscles strength	shoulder internal rotator muscles strength will be measured by active force 2 device	up to one day
shoulder external rotator muscles strength	shoulder external rotator muscles strength will be measured by the Active Force 2 device	up to one day
scapular dyskinesis	lateral scapular slide test (LSST) will be used to assess scapular dyskinesis. examined the distance between the scapular inferior angle and the corresponding spinous process in three different positions using the lateral scapular slide test (LSST) to evaluate scapular stability in both the right and left scapula. The subject's arms were relaxed at his sides, lying on his hips, with his shoulders internally rotated and abducted 45 degrees, and fully internally rotated and abducted 90 degrees.Kibler has stated that a 1.5 cm discrepancy on both sides should be considered abnormal scapular asymmetry.	up to one day

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Estimated): May 20, 2026
• Primary Completion (Estimated): July 20, 2026
• Study Completion (Estimated): July 20, 2026

Study Registration Dates

• First Submitted: May 12, 2026
• First Submitted That Met QC Criteria: May 12, 2026
• First Posted (Actual): May 18, 2026

Study Record Updates

• Last Update Posted (Actual): May 20, 2026
• Last Update Submitted That Met QC Criteria: May 17, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Keywords: Scapular Dyskinesia; Subacromial Space; Rotator Cuff Strength; Asymptomatic Scapular Dyskinesia
• Other Study ID Numbers: P.T.REC/012/006147

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No