Factors Associated With Full Recovery After Surgical Repair of Shoulder Instability

Study Overview
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Brief Summary
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Case control study to evaluate different factors (e.g muscle strength, psychological factors) that are associated with full recovery and functional status 6 months after surgical repair of shoulder instability.

Detailed Description
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In this study the investigators will try to find correlations between different factors and functional abilities of patients 6 months post shoulder surgery. Patients will be examined in a single encounter for muscle strength, fear avoidance beliefs and functional abilities. Functional abilities will be examined using two validated questionnaires: The Western Ontario Shoulder Instability index (WOSI) Disabilities of the Arm, Shoulder and Hand (DASH) Fear avoidance will be evaluated using the Fear Avoidance Belief Questionnaire (FABQ) Muscle strength of the rotator cuff muscles will be measured using Biodex Isokinetic system, model 4.

Official Title
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Factors Associated With Full Recovery After Surgical Repair of Shoulder Instability - Cross Sectional Study

Conditions
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Chronic Instability of Joint

Intervention / Treatment
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* Other: Questionnaires
* Device: Isokinetic Strength Measurement


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 26-28 weeks s/p surgical repair of shoulder instability At least 1 shoulder dislocation prior to surgery Exclusion Criteria: Previous surgery in either shoulders Any injury in the non-operated shoulder in the last 6 months Any history of shoulder dislocation or subluxation in the non-operated shoulder Any tendon repair during the surgery.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Screening
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Patients<br>Male patients who undergone shoulder surgery to repair chronic instability (at least 1 shoulder dislocation prior to surgery). Time since surgery will be between 26 and 28 weeks. Patients will go through filling questionnaires and isokinetic strength measurements. | Other: Questionnaires<br>* Patients will fill self-reported functional shoulder scales (1. Western Ontario Shoulder Instability index - WOSI, and 2. Disabilities of Arm, Shoulder and Hand questionnaire - DASH), as well as a Fear Avoidance Belief Questionnaire (FABQ).<br>Device: Isokinetic Strength Measurement<br>* Isokinetic strength will be measured using a Biodex Isokinetic System 4.0 (Shirley, NY)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Western Ontario Shoulder Instability index (WOSI) | Functional scale | 26-28 weeks post surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Fear avoidance belief questionnaire (FABQ) | Fear avoidance questionnaire | 26-28 weeks post surgery | 
| Isokinetic strength | Ratios between Internal and External rotation strength in both shoulders | 26-28 weeks post surgery | 
| Disabilities of Arm, Shoulder and Hand Questionnaire (DASH) | Functional scale | 26-28 weeks post surgery |