Effectiveness of Interscalene Brachial Plexus Block and Intra-articular Injection of Ropivacaine for Post-operative Analgesia in Arthroscopic Shoulder Stabilization Surgery

Study Overview
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Brief Summary
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This study evaluates two anaesthetic techniques namely interscalene brachial plexus block and intra-articular local anaesthetic injection. Both techniques are currently used for providing postoperative pain relief following arthroscopic shoulder stabilisation operation. It will be a randomised controlled trial involving 30 patients in two groups.

Official Title
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Effectiveness of Interscalene Brachial Plexus Block and Intra-articular Injection of Ropivacaine for Post-operative Analgesia in Arthroscopic Shoulder Stabilization Surgery

Conditions
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Postoperative Analgesia

Intervention / Treatment
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* Procedure: Interscalene brachial plexus block
* Procedure: Intra-articular Ropivacaine injection
* Device: Ultrasound guided technique
* Drug: Ropivacaine
* Drug: Ropivacaine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: • All adult patients above the age of 18 years undergoing arthroscopic shoulder stabilisation operation Exclusion Criteria: Patients not meeting inclusion criteria Patients unable to give informed consent Patient refusal to participate in the study Contraindications to Interscalene block Allergy to local anaesthetics Peripheral neuropathy from any cause Patients on opiates for chronic pain Pregnant women

Ages Eligible for Study
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Minimum Age: 18 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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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Interscalene brachial plexus block<br> | Procedure: Interscalene brachial plexus block<br>* An interscalene block will be performed pre-operatively using ultrasound guidance and the peripheral nerve stimulator (with the patient awake) using 20 ml of 0.375% Ropivacaine.<br>Device: Ultrasound guided technique<br>* The block will be performed under U/S guidance<br>Drug: Ropivacaine<br>* 20ml of 0.375% Ropivacaine<br>|
| Experimental: Intra-articular injection<br> | Procedure: Intra-articular Ropivacaine injection<br>* The procedure will be done by the surgeon at the end of the operation, with an intra-articular injection of 20 ml 0.75% Ropivacaine through the arthroscopic cannula after closure of the anterior wound<br>Drug: Ropivacaine<br>* 20ml of 0.75% Ropivacaine injected by the surgeon at the end of the procedure<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean pain score over the first 24 hours following arthroscopic shoulder stabilisation operation |  | 24 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Post-operative analgesic requirements in the first 24 hours after surgery |  | 24 months | 
| Patient assessment of quality of analgesia and identifying any complications as a result of the two anaesthetic procedures |  | 24 months |