Pain Management After Shoulder Prosthesis: A Clinical Trial of Nerve Block and Local Infiltration

Pain Management After Shoulder Arthroplasty: A Randomised Clinical Trial of Interscalene Block and Local Infiltration Analgesia

The purpose of this study is to determine the efficacy of local infiltration analgesia as compared to 48-hour interscalene block in treating pain after shoulder arthroplasty. The investigators hypothesize a reduced pain score and use of supplemental analgesic medication during the first three postoperative days using local infiltration analgesia.

Inclusion Criteria:

• elective primary shoulder arthroplasty

Exclusion Criteria:

• reverse or delta prosthesis
• recent fracture near the shoulder
• allergic to amid-type local analgesics
• operation not under general anaesthesia
• incompetent, pregnant, below 18 or above 90 years old
• severe chronic neurogenic pain or sensory disturbances in the shoulder