Interventional therapies for management of hip fracture pain peri-operatively: A review article

Background: Hip fracture is a common reason for elderly admission to hospital and majority of patients will require a hip fixation surgery. Pain originating from a hip fracture is usually severe and the need to improve comfort is paramount, especially before the hip fixation surgery because severe pain results in unnecessary stress response such as catecholamines release, tachycardia and hypertension. This worsens outcomes, increases risk of complications such as myocardial ischaemia, strokes, pulmonary embolus or deep vein thrombosis. Multimodal systemic analgesia has been shown to be effective in reducing pain in hip fractures but the associated side effects and contraindications have accelerated the adoption of nerve blocks in the peri-operative management of hip fracture patients.(1) As a result, this has been increasingly recognised as a important component of the hip fracture pathway (as part of a multimodal approach for analgesia) and many hospitals have protocols to perform various interventional therapies (various nerve blocks) for newly admitted patients with hip fracture to alleviate pain immediately and potentially provide intra and post-operative analgesia. Objective: The aim of this review is to elucidate the various interventional therapies currently available (including pericapsular nerve group (PENG) block which was first described in 2018), their evidence and the pros and cons. Methods: We reviewed the latest evidence for femoral nerve block (FNB), 3-in-1 block, lumbar plexus block (LPB), fascia iliaca block (FIB), erector spinae plane block (ESPB) and pericapsular nerve group (PENG) block. Results and conclusion: Each block has its pros and cons, as discussed in this review article. The procedurist should deliberate these considerations before deciding which block is most appropriate.