Pain Management for Femur Fracture

Regional Anesthesia: First-Line Approach

The American Society of Anesthesiologists recommends femoral nerve blocks as the primary analgesic modality for femur fractures based on superior efficacy and reduced side-effect profile compared to systemic opioids 1, 2, 3
Continuous catheter techniques are superior to single-shot blocks, providing extended analgesia duration and greater proximal spread of effect 1, 2
Fascia iliaca compartment block (FICB) is equally effective, safe, reliable, and reproducible for perioperative pain management in femur fractures 4, 5
Regional anesthesia reduces acute confusional state and postoperative delirium 4
Regional anesthesia decreases chest infection rates 4
Regional anesthesia promotes earlier mobilization 4, 5
Regional anesthesia significantly reduces morphine consumption 4, 5

Paracetamol is mandatory baseline treatment for all pain intensities as it decreases supplementary analgesic requirements 1, 2
COX-2 selective inhibitors or conventional NSAIDs should be added unless contraindicated (renal dysfunction, bleeding risk) 1, 2

Reserve intravenous strong opioids for breakthrough pain when regional anesthesia plus non-opioid analgesics are insufficient 1, 2
IV patient-controlled analgesia (PCA) is preferred over fixed-interval or on-demand administration 1, 2

Spinal anesthesia with local anesthetic plus low-dose opioid provides excellent perioperative analgesia 1, 2, 6
Continuous epidural with local anesthetic and opioids is recommended for patients with cardiopulmonary risk factors due to decreased cardiopulmonary morbidity 1, 2

Never use opioids as the sole analgesic adjunct in femur fracture patients due to increased risk of respiratory depression and postoperative confusion 3, 6
Avoid intramuscular opioid administration 1, 2
Do not use weak opioids for severe pain in the first 6 hours postoperatively 1, 2
Avoid NSAIDs in patients with renal dysfunction 7, 8
Do not combine general and neuraxial anesthesia 3, 6
Avoid epidural clonidine and spinal clonidine 1, 2

The World Journal of Emergency Surgery recommends administering acetaminophen 1000 mg IV or PO every 6 hours routinely for all patients unless contraindicated, which decreases supplementary analgesic requirements and forms the foundation of multimodal analgesia 9
The American Society of Anesthesiologists, as reported in Anaesthesia, suggests that NSAIDs are contraindicated in patients with renal dysfunction and should be used with extreme caution in all femur fracture patients 10
The World Journal of Emergency Surgery and Anaesthesia recommend avoiding NSAIDs entirely if any degree of renal impairment exists, and co-prescribing a proton pump inhibitor if NSAIDs are used, particularly in patients on ACE inhibitors, diuretics, or antiplatelets 9, 10

Anaesthesia recommends reserving opioids strictly for breakthrough pain unresponsive to regional anesthesia plus non-opioid analgesics, and reducing both dose and frequency of IV opioids by half in renal impairment 10
The World Journal of Emergency Surgery and Anaesthesia suggest never using codeine, and using tramadol cautiously with reduced dosing in renal dysfunction 9, 10

Anaesthesia recommends optimized fluid management to reduce morbidity and hospital stay, particularly important before considering NSAIDs, as volume depletion increases renal toxicity risk 10
The American College of Chest Physicians, as reported in Anaesthesia, suggests administering low molecular weight heparin or fondaparinux between 18:00-20:00 to minimize bleeding risk with neuraxial techniques, with timing critical if regional anesthesia is planned 10

The American Society of Anesthesiologists recommends acetaminophen as the foundation of pain control, which decreases supplementary analgesic requirements and should be administered regularly, as part of a multimodal regimen for patients at two weeks post-femur fracture, with a strength of evidence based on high-quality guidelines from 2012 11
At two weeks post-fracture, patients are typically in the remobilization phase where analgesia requirements vary considerably, making scheduled dosing of acetaminophen particularly important, according to the Anaesthesia journal in 2012 11

The Anaesthesia journal in 2012 recommends including pain evaluation as part of routine nursing observations during the remobilization period when requirements fluctuate significantly 11
Pain during physical therapy and mobilization often differs substantially from resting pain, requiring careful titration, as noted in the Anaesthesia journal in 2012 11
Postoperative cognitive dysfunction occurs in 25% of hip fracture patients and interrupts rehabilitation; opioids significantly worsen this risk, according to the Anaesthesia journal in 2012 11
Adequate analgesia, nutrition, hydration, and electrolyte balance form the multimodal optimization needed to prevent delirium, as recommended by the Anaesthesia journal in 2012 11
Hypovolemia remains common at two weeks; encourage oral fluid intake rather than routine IV fluids, as this impacts both renal function and NSAID safety, according to the Anaesthesia journal in 2012 11
Cyclizine should be used with extreme caution due to antimuscarinic side effects in this population, as noted in the Anaesthesia journal in 2012 11