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Alternative pain relief for knee replacement patients

ANI Jul 28, 2017

There's new hope in the battle against pain as a recent study has recommended an alternative method of relief for patients undergoing knee replacement surgery.

 

 

A traditional option for pain relief during knee replacement surgery is a 'femoral nerve block’ a single dose of local anaesthetic injected around the femoral nerve in the groin, which is typically administered by an anaesthetist. However, a newer alternative approach uses an injection of anaesthetic agents around the knee joint and is administered by the surgeon without the need for specialist equipment.Over 250 patients having knee replacements at University Hospitals Coventry and Warwickshire (UHCW) took part in the study, which found that patients who had the knee injections required lower doses of powerful painkillers such as morphine after surgery.

Morphine can cause serious and troublesome side effects in postoperative patients and is best avoided if possible. Also, unlike a femoral nerve block, there is no need for specialist equipment like ultrasound. This is therefore likely to save surgeons and anaesthetists valuable time and resources and improve patient care.A tribute was published in the article to Andrew Sprowson, a Consultant Orthopaedic Surgeon at UHCW, and Associate Professor at the University of Warwick, who had been Chief Investigator in the study until his untimely death in March 2015.

Lead author Peter Wall said, “Our study has demonstrated the advantages of injections of anaesthetic agents around the knee during knee replacement surgery over other methods. These injections are now shown to be safe and effective. They also involve fewer resources and reduce the need for powerful painkillers such as morphine.”"This is to be welcomed as the potential risks of morphine-type pain relief are well known and should be avoided where possible. We hope that these study findings, if put into practice, will benefit patients around the world,” added Wall.

 

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