| Femoral nerve block | |
|---|---|
 Ultrasound guided femoral nerve block | |
| Other names | Femoral block |
Afemoral nerve block is anerve block that useslocal anesthetic to achieveanalgesia in theleg. The block works by affecting thefemoral nerve.
A femoral nerve block (FNB) results in anesthesia of the skin and muscles of theanteriorthigh and most of thefemur andknee joint, as well as the skin on the medial aspect of the leg below the knee joint.[1]
The block can be performed usinganatomical landmarks,ultrasound or anerve stimulator.[2]
For hip surgery, a femoral nerve block andfascia iliac block (FIB) are alternative methods for providing analgesic relief. A meta-analysis concluded that compared to FIB, the FNB decreasedvisual analog scale at 24 hrs and the incidence of nausea, vomiting and oversedation.[3]
For knee surgery, a femoral nerve block may lead to delayed postoperative mobilization of the patient and greater risk of falls as it causes motor blockade of thequadriceps muscles.[4] Due to the sparing of the thigh muscles theadductor canal block is becoming a preferred choice for providing post-operative analgesia for knee surgery.[5]
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