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Complications After Popliteal Block for Foot and Ankle Surgery
John G Anderson1, Donald R Bohay2, John D Maskill2
1Orthopaedic Associates of Michigan, Grand Rapids, MI, USA John.Anderson@oamichigan.com.
Foot & Ankle International
|June 26, 2015
Summary
Popliteal nerve blocks for lower extremity surgery showed a higher early complication rate than previously reported. While most neuropathic symptoms resolved, a small percentage persisted long-term.
Area of Science:
- Anesthesiology
- Orthopedic Surgery
- Neurology
Background:
- Popliteal nerve block is a common, lower-risk analgesic for knee, foot, and ankle surgery.
- Previous studies reported minimal complications, but recent increased use necessitates updated data.
- The study investigates if complication rates align with current usage trends.
Purpose of the Study:
- To evaluate the incidence of neuropathic complications after popliteal nerve blocks.
- To compare current complication rates with historical data.
- To identify potential risk factors for complications.
Main Methods:
- Retrospective chart review of 1014 patients undergoing popliteal block for foot/ankle surgery.
- Analysis of postoperative neuropathic complications, tourniquet details, and patient history.
- Statistical analysis using chi-square, Fisher's exact, and t tests (P < .05).
Main Results:
- 52 patients (5%) experienced adverse symptoms attributed to the block.
- 7 patients (0.7%) had unresolved neuropathic symptoms at final follow-up.
- No specific underlying causes for complications were identified.
Conclusions:
- The incidence of neuropathic complications post-popliteal nerve block is higher than previously documented.
- The rate of unresolved long-term symptoms remains consistent with prior literature.
- Further research is needed to understand and mitigate these complications.
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