Popliteal Sciatic Nerve Block

CA-1 ·

Case context, local only: Foot and ankle surgery, technique, catheter vs single-shot evidence.
21Sources
6Kept
1Dropped

1 · Find evidence

PubMed query

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Ask OpenEvidence ↗

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21 candidate papers · 4 excluded

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Same-day build

Build finished — 6 points drafted. The deck is in draft and needs your review. Open the draft deck done
PubMed query

Runs the tiered searches, drafts one point per included paper, runs the citation gate and builds a draft deck — the steps below, unattended. Same-day build — drafted locally (medgemma:27b), confirmed against each abstract. The deck still lands in draft: nothing here approves anything.

2 · Teaching points

Source

A point with no source will not survive the gate. That is the point of the gate.

7 points

This randomized controlled trial found that for bimalleolar or trimalleolar ankle fracture surgery, adding a continuous adductor canal block to a continuous popliteal sciatic nerve block reduces medial ankle pain at 12 to 72 hours compared to a single-injection adductor canal block. PMID 38316570 — not confirmed against the abstract: The abstract states "continuous sciatic nerve block," not "continuous popliteal sciatic nerve block." dropped
This review notes that liposomal bupivacaine is approved for popliteal fossa sciatic nerve blocks and may prolong analgesia without a postoperative catheter, despite mixed clinical trial results compared to unencapsulated bupivacaine. PMID 40948568 kept
This systematic review found that adding a saphenous or ankle block to a popliteal nerve block when using a calf tourniquet may increase overall block effectiveness, and combined peripheral nerve blocks reduce postoperative opioid consumption compared to single-site blocks. PMID 33168443 kept
This randomized trial found that adding 200 mg magnesium sulfate to ropivacaine for popliteal sciatic nerve block in bunion correction surgery shortened sensory block onset to 9.2 minutes and prolonged duration to 18.2 hours compared to saline. PMID 39480231 kept
This review states that for a sciatic nerve block at the popliteal fossa using Exparel™, the injection is usually preceded by plain bupivacaine to initiate analgesia before enough bupivacaine is released from the DepoFoam to be pharmacodynamically effective. PMID 38731140 kept
This meta-analysis found that continuous popliteal sciatic nerve block lowers VAS pain scores at 24 and 48 hours postoperatively compared to single-injection, but carries a 13.9% risk of catheter drug leakage. PMID 31601208 kept
This randomised trial found that for forefoot surgery using 30 ml of ropivacaine 0.5% with multimodal analgesia, a sciatic nerve block at the popliteal crease does not provide a longer duration of analgesia than an ankle block. PMID 37972929 kept

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