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Aim Pain is a common post-operative complication after limb amputation. Though the evidence is mixed, current literature suggests nerve sheath catheters (NSC) have no effect on chronic stump pain, phantom limb pain or post-operative pain score but reduces opioid use. This study aims to compare pain outcomes in those with and without NSC after above knee amputations (AKA) and below knee amputations (BKA). Method This retrospective study collected information from 32 patients after lower-limb amputation from April 2014 - March 2017. Information regarding indication, anaesthetic and morphine requirement at 72 hours were collected from medical records and standardised questions used to assess phantom limb pain, chronic limb pain and pain intensity (1-10) at 24, 48 and 72 hours. Results Of the 11 patients who received a NSC catheter for pain control, 33% experienced no post-operative pain, 18% experienced phantom limb pain, 18% reported chronic limb pain and 62% required higher dosages of morphine at 72 hours. However, two patients used large amounts of morphine potentially giving spurious results. In comparison, of those patients without NCS, 43% experienced no pain, 9% experienced phantom limb pain, 33% reported chronic limb pain and only 47% required morphine at 72 hours and at lower doses compared to with NSC. The incidence of phantom limb pain was higher in those who had AKA regardless of the analgesic technique used. Conclusion Patients with NSC were less likely to experience chronic limb pain thus proving their role in post-operative pain control despite having higher morphine requirements.

EP.WE.501The Role of Nerve Sheath Catheters after Major Lower Limb Amputations in Post-operative Pain Control