Falls associated with lower-extremity-nerve blocks: a pilot investigation of mechanisms.
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Falls associated with lower-extremity-nerve blocks: a pilot investigation of mechanisms.
Reg Anesth Pain Med. 2007 Jan-Feb;32(1):67-72
Authors: Muraskin SI, Conrad B, Zheng N, Morey TE, Enneking FK
OBJECTIVE: Documented falls after lower-extremity-nerve blocks are rare. We believe this paucity of documented falls is the result of underreporting and the lack of serious complications resulting from these falls. In addition, the mechanism(s) for falls after lower-extremity-nerve blocks has not been elucidated. CASE REPORTS: These reports highlight the mechanism of fall in a patient with a femoral-nerve block (FNB) and in a patient with a femoral-nerve and sciatic-nerve block (FNB/SNB). In addition, we report our findings when volunteers underwent FNB, sciatic-nerve block (SNB) and FNB/SNB and were studied in a gait-analysis laboratory. CONCLUSIONS: Lower-extremity-nerve blocks result in decreased leg stiffness and lateral instability, which may lead to difficulty with pivoting maneuvers.
PMID: 17196495 [PubMed - indexed for MEDLINE]
A nice pilot investigation using biomechanic and gait analysis to examine changes in ambulation following peripheral nerve blocks. The videos are especially enlightening. Study was done on healthy volunteers. With fall-prevention a focus of recent healthcare quality efforts, a timely read.
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