Prediction of Functional Disability in Subjects With Scapular Dyskinesis

Prediction of Functional Disability in Subjects With Scapular Dyskinesis: Shoulder Tightness, Forward Shoulder Posture, Joint Range of Motion, Scapular Kinematics and Associated Muscular Activity

Background: Patterns of scapular dyskinesis have unique scapular kinematics and associated muscular activation. The characteristics of scapular dyskinesis may be associated with functional disability. The investigators investigated whether the level of shoulder function and primary dysfunction items were different in each unique pattern of scapular dyskinesis. The factors associated with shoulder dysfunction in different patterns of scapular dyskinesis were identified.

Methods: Participants with unilateral shoulder pain were classified as having a single dyskinesis pattern (inferior angle prominence, pattern I; medial border prominence, pattern II) or a mixed dyskinesis pattern (patterns I+II). Clinical measurements with the Flexilevel Scale of Shoulder Function (FLEX-SF score), shoulder range of motion, anterior/posterior shoulder tightness, and pectoralis minor index were recorded. These clinical measurements, 3-D scapular kinematics (electromagnetic-based motion analysis), and associated muscular activation (electromyography on the upper, middle, and lower parts of the trapezius and serratus anterior muscles) during arm elevation were analyzed for associations with functional disability.

Study Overview

• Status: Completed
• Conditions: Scapular Dyskinesis

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

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 50 years (ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Function-related factors in patients with scapular dyskinesis. Fifty-one participants (40 males; 11 females; mean age= 22.5±2.4 years; mean height=171.4 ± 8.0 cm; mean weight= 64.9 ± 10.5 kg) were recruited.

Description

Inclusion Criteria:

• Subjects were from 18 to 50 years old and had unilateral shoulder pain around the shoulder complex, including the glenohumeral, scapulothoracic, sternoclavicular, and acromioclavicular regions, while performing shoulder movement.

Exclusion Criteria:

• Subjects were excluded if they had a history of shoulder dislocation, fracture, or shoulder surgery within the past 1 year, or a history of direct contact injury to the neck or upper extremities within the past 1 month. Subjects who had neurological disorders or demonstrated pain (VAS>3) during the overall testing procedures were also excluded.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Shoulder Function Questionnaire	Shoulder function of participants was assessed with the Flexilevel Scale of Shoulder Function (FLEX-SF score)	one year
Range of Motion on shoulder, range in degrees	Shoulder range of motion of participants was assessed by a physiotherapist using goniometer to measure	one year
Pectoralis Minor Index (PMI)	The length between the inferomedial aspect of the coracoid process and the caudal edge of the fourth rib at the sternum was measured by a physiotherapist using a meter, and then the parameter was divided by participants' height to calculate for PMI	one year

Collaborators and Investigators

• Sponsor: National Taiwan University Hospital

Study record dates

Study Major Dates

• Study Start: March 1, 2012
• Primary Completion (ACTUAL): December 1, 2013
• Study Completion (ACTUAL): October 1, 2014

Study Registration Dates

• First Submitted: October 14, 2015
• First Submitted That Met QC Criteria: October 22, 2015
• First Posted (ESTIMATE): October 26, 2015

Study Record Updates

• Last Update Posted (ESTIMATE): October 26, 2015
• Last Update Submitted That Met QC Criteria: October 22, 2015
• Last Verified: October 1, 2015

More Information

Terms related to this study

• Keywords: kinematics; scapular dyskinesis
• Additional Relevant MeSH Terms: Central Nervous System Diseases; Nervous System Diseases; Neurologic Manifestations; Movement Disorders; Dyskinesias
• Other Study ID Numbers: 201112035RIB