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THE PROSPECTIVE STUDY FOR THE EVALUATION OF LOCAL ANALGESIA WITH SUBACROMIAL CATHETER FOLLOWING SHOULDER SURGERY



Abstract

Shoulder surgery is associated with moderate to severe post-operative pain. A pain free post-operative period is desirable and appreciated by both patients and therapists and is essential for early rehabilitation. Analgesia can be provided either locally or systemically or by combining the two.

A prospective, randomised double blind study was designed to assess the effectiveness of an existing postoperative local analgesic method: using Marcaine through subacromial catheter.

Thirty-nine patients were included in the trial. All patients had simple arthroscopic subacromial decompression and no additional pathology to the shoulder. At the end of the operation a standard epidural catheter was inserted into the subacromial space under visual control. Sixteen patients had 0.25% Bupivacaine and 23 patients had normal Saline given in 10 ml boluses six hourly, until required. All patients had access to conventional pain relief (paracetamol, non-steroids, minor opioids, morphine). VAS scores were taken before and one hour after the study bolus was given. In addition the patients were assessed for quality of sleep, opinion about the analgesia provided by the catheter and VAS of pain prior to and post physiotherapy sessions. The physiotherapist also recorded the active forward flexion of the operated shoulder. The number of doses required and all additional analgesic medication were recorded.

The use of subacromial local anaesthetic provides significantly better pain relief (P=0.029). However, patients with subacromial local anaesthetic

The abstracts were prepared by Mr Roger Emery. Correspondence should be addressed to him at the British Orthopaedic Association, Royal College of Surgeons, 35-43 Lincoln’s Inn Fields, London WC2A 3PN