CLINICAL CASE: THE USE OF FEMORAL AND SCIATIC NERVE BLOCK COMBINATION IN PAIN MANAGEMENT AFTER TOTAL KNEE ARTHROPLASTY
DOI:
https://doi.org/10.52340/jecm.2025.06.32Keywords:
Total knee arthroplasty, Femoral nerve block, Sciatic nerve block, PainAbstract
Total knee arthroplasty (TKA) is frequently associated with significant postoperative pain, which can impair early rehabilitation and increase opioid consumption. Femoral nerve block (FNB) is widely used to manage anterior knee pain but may cause quadriceps weakness and does not reliably cover posterior knee innervation. The addition of a sciatic nerve block (SNB) may enhance analgesic efficacy by targeting posterior knee structures. However, concerns remain regarding potential motor deficits, including foot drop. This case report presents two patients who underwent unilateral TKA and received a combined femoral and sciatic nerve block after confirming full return of motor function, aiming to optimize postoperative analgesia while minimizing neurological risks.
Unlike traditional protocols in which nerve blocks are performed preoperatively or immediately at the end of surgery, these cases utilized a delayed block technique - administering FNB and SNB after confirmation of restored foot motor function. This approach allows early detection of surgical nerve injury and reduces the risk of masking postoperative complications such as foot drop.
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References
Sundarathiti, P. ∙ Ruananukul, N. ∙ Channum, T.- A comparison of continuous femoral nerve block (CFNB) and continuous epidural infusion (CEI) in postoperative analgesia and knee rehabilitation after total knee arthroplasty (TKA) - J Med Assoc Thai. 2009; 92:328-334
Morin, A.M. ∙ Kratz, C.D. ∙ Eberhart, L.H. Postoperative analgesia and functional recovery after total-knee replacement: comparison of a continuous posterior lumbar plexus (psoas compartment) block, a continuous femoral nerve block, and the combination of a continuous femoral and sciatic nerve block. Reg Anesth Pain Med. 2005; 30:434-445
Korean Knee Society - Guidelines for the management of postoperative pain after total knee arthroplasty Knee Surg Relat Res. 2012; 24:201-207
Koscielniak-Nielsen, Z.J. ∙ Rasmussen, H. ∙ Hesselbjerg, L. Long-axis ultrasound imaging of the nerves and advancement of perineural catheters under direct vision: a preliminary report of four cases - Reg Anesth Pain Med. 2008; 33:477-482
Zaric, D. ∙ Boysen, K. ∙ Christiansen, C.- A comparison of epidural analgesia with combined continuous femoral-sciatic nerve blocks after total knee replacement. Anesth Analg. 2006; 102:1240-1246
Kinjo, S. ∙ Lim, E. ∙ Sands, L.P.- Does using a femoral nerve block for total knee replacement decrease postoperative delirium? - BMC Anesthesiol. 2012; 12:4
A Sinha, VW Chan - Ultrasound imaging for popliteal sciatic nerve block - Reg Anesth Pain Med, 29 (2004), pp. 130-134
Paul JE, Arya A, Hurlburt L, et al. Femoral nerve block improves analgesia outcomes after total knee arthroplasty: a meta-analysis of randomized controlled trials. Anesthesiology. 2010;113:1144Y1162
Hadzic A, Houle TT, Capdevila X, Ilfeld BM. Femoral nerve block for analgesia in patients having knee arthroplasty. Anesthesiology. 2010;113:1014Y1015
Ben-David B, Schmalenberger K, Chelly JE. Analgesia after total knee arthroplasty: is continuous sciatic blockade needed in addition to continuous femoral blockade? Anesth Analg. 2004;98:747Y749,
Summers S, Mohile N, McNamara C, Osman B, Gebhard R, Hernandez VH. Analgesia in Total Knee Arthroplasty. J Bone Jt Surg. 2020;102(8):719-727. doi:10.2106/jbjs.19.01035
Sharma S, Iorio R, Specht LM, Davies-Lepie S, Healy WL. Complications of Femoral Nerve Block for Total Knee Arthroplasty. Clin Orthop Relat Res. 2010;468(1):135-140. doi:10.1007/s11999-009-1025-1
Chan MH, Chen WH, Tung YW, Liu K, Tan PH, Chia YY. Single-injection femoral nerve block lacks preemptive effect on postoperative pain and morphine consumption in total knee arthroplasty. - Acta Anaesthesiol Taiwan. 2012 Jun;50(2):54-8. doi:10.1016/j.aat.2012.05.007. Epub 2012 Jun 21.PMID: 22769858Clinical Trial.
