Rotator Cuff Tear Severity and Scapular and Rotator Cuff Muscle Activation Patterns

Recruiting

• Conditions: Rotator Cuff Injuries; Shoulder Pain; Rotator Cuff Tears
• Interventions: Diagnostic Test: Surface Electromyography (sEMG) Assessment

• Registration Number: NCT05946343
• Lead Sponsor: Ahram Canadian University

Brief Summary

Rotator cuff tears are common musculoskeletal injuries that can lead to altered scapular and rotator cuff muscle activation patterns and reduced function. This study aims to investigate the relationship between rotator cuff tear severity and scapular and rotator cuff muscle activation patterns.

The primary objective of this study is to determine whether a relationship exists between the severity of rotator cuff tears and the activation patterns of scapular and rotator cuff muscles. Secondary objectives include:

1. Identifying differences in muscle activation patterns between varying tear sizes.

2. Evaluating the potential of these activation patterns as an indicator for the severity of rotator cuff tears.

3. Assessing the influence of muscle activation patterns on the functional capacity of the affected shoulder.

Detailed Description

Not available

Study Timeline

• Status Verified: 2023-07
• Study First Submitted: 2023-07-07
• Study First Submitted QC: 2023-07-07
• Last Update Submitted: 2023-07-07
• Study First Posted: 2023-07-14
• Last Update Posted: 2023-07-14
• Study Start: 2023-07-15
• Primary Completion: 2024-01-15
• Study Completion: 2024-01-15

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

• Age between 18 and 60 years.
• Diagnosis of rotator cuff tear confirmed by a qualified orthopedic surgeon.
• MRI scan showing the size of the tear (small, medium, large, or massive).
• Ability to provide informed consent and comply with the study protocol.

Exclusion Criteria

• History of shoulder surgery or other shoulder disorders unrelated to rotator cuff tears.
• Presence of neurological, cardiovascular, or respiratory disorders that could influence muscle activation patterns.
• Contraindications for sEMG assessment, such as skin allergies or infections.
• Inability to perform the required functional tasks due to severe pain or disability.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Small Rotator Cuff Tear Group	Surface Electromyography (sEMG) Assessment	The Cofield classification system is a commonly cited classification system for full-thickness rotator cuff tears. It is based on the size of the tear. Small tear: Less than 1 cm.
Medium Rotator Cuff Tear Group	Surface Electromyography (sEMG) Assessment	The Cofield classification system is a commonly cited classification system for full-thickness rotator cuff tears. It is based on the size of the tear. Medium tear: 1-3 cm
Large Rotator Cuff Tear Group	Surface Electromyography (sEMG) Assessment	The Cofield classification system is a commonly cited classification system for full-thickness rotator cuff tears. It is based on the size of the tear. Large tear: 3-5 cm
Massive Rotator Cuff Tear Group	Surface Electromyography (sEMG) Assessment	The Cofield classification system is a commonly cited classification system for full-thickness rotator cuff tears. It is based on the size of the tear. Massive tear: Greater than 5 cm

Primary Outcome Measures

Name	Time	Method
Muscle Activation Amplitude	baseline	Muscle activation amplitude for the scapular and rotator cuff muscles (serratus anterior, upper and lower trapezius, supraspinatus, and infraspinatus) during functional tasks.

Secondary Outcome Measures

Name	Time	Method
Differences in Muscle Activation Patterns by Tear Size	baseline	Identification of differences in muscle activation patterns between varying tear sizes (small, medium, large, and massive).

Trial Locations

Locations (1)

Outpatient clinic of faculty of physical therapy, Ahram Canadian University; 🇪🇬 Al Ḩayy Ath Thāmin, Giza, Egypt