Postoperative Pain After Ambulatory Arthroscopic Shoulder Surgery

Study Overview
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Brief Summary
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Shoulder disorders are frequent, often associated with pain and occur in 7-34% of the general population and in 21% of the elderly population. Of particular interest is prediction of postoperative pain after outpatient arthroscopic shoulder surgery since the clinical experience is that surgery does not always provides pain relief and the interindividual variation in acute postoperative pain intensity is significant. In addition, a Swedish study has shown that shoulder operations are associated with longer convalescence than other orthopaedic outpatient surgeries.

Detailed Description
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This study is a prospective cohort with 6 months follow-up. Patients receive 5 questionnaires (preoperatively, 24 hours, 1 week, 3 months, 6 months, 1 and 2 years after surgery). The questionnaires contain questions about: Preoperative shoulder pain (type, intensity and duration) Preoperative pain in other areas besides the shoulder Brief Pain Inventory (BPI) Western Ontario Rotator Cuff Index (WORC) Single Assessment Numeric Evaluation (SANE) 3 validated physiological questionnaires: State Trait Anxiety (STAI) Pain Catastrophizing Scale (PCS) Hospital Anxiety and Depression Scale (HADS) In addition a cold pressor test is performed on the day of surgery to test the patients' threshold and ability to repress pain.

Official Title
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Postoperative Pain After Ambulatory Arthroscopic Shoulder Surgery

Conditions
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Chronic Postoperative Pain

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Arthroscopic shoulder surgery (subacromial decompression and acromioclavicular joint resection). Exclusion Criteria: • < 18 years mental disorders Unable to speak and/or read Danish Shoulder surgery within the last year Raynauds phenomenon Cuff suture Biceps tenodesis Labrum suture

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 110 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Chronic postoperative pain | Measured on a numerical rating scale (NRS; 0=no pain and 10=worst possible pain. Chronic postoperative pain is defined as NRS>=3 with an impact on daily living | 6 months after surgery | 
| Acute postoperative pain | Measured on a numerical rating scale (NRS; 0=no pain and 10=worst possible pain. NRS>3= acute postoperative pain | 24 hours after surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Acute postoperative pain | Measured on a numerical rating scale (NRS; 0=no pain and 10=worst possible pain. NRS>3= acute postoperative pain | 1 week after surgery | 
| Acute postoperative pain | Measured on a numerical rating scale (NRS; 0=no pain and 10=worst possible pain. NRS>3= acute postoperative pain | 3 month after surgery | 
| Preoperative psychological predictors for chronic pain | Hospital Anxiety and Depression Scale (HADS) | 6 months after surgery | 
| Preoperative psychological predictors for chronic pain | State-Trait Anxiety | 6 months after surgery | 
| Preoperative psychological predictors for chronic pain | Pain Catastrophizing Scale (PCS) | 6 months after surgery | 
| Preoperative physical predictors for chronic pain | Cold pressure test | 6 months after surgery | 
| Preoperative comorbidity | Other places than the shoulder | 6 months after surgery |