Comparison of Ultrasound Guided Femoropopliteal Block versus Spinal Anaesthesia for Ankle Surgery

Authors

  • Afzal Shabbir Department of Anaesthesia, Combined Military Hospital/National University of Medical Sciences (NUMS), Rawalpindi Pakistan
  • Khalid Buland Department of Anaesthesia, Combined Military Hospital/National University of Medical Sciences (NUMS), Rawalpindi Pakistan
  • Junaid Zafar Department of Anaesthesia, Combined Military Hospital/National University of Medical Sciences (NUMS), Rawalpindi Pakistan
  • Muhammad Asif Hayat Department of Anaesthesia, Combined Military Hospital/National University of Medical Sciences (NUMS), Rawalpindi Pakistan
  • Nasar ul Islam Zakria Department of Anaesthesia, Combined Military Hospital/National University of Medical Sciences (NUMS), Rawalpindi Pakistan
  • Syed Aqib Ali Shah Department of Anaesthesia, Combined Military Hospital/National University of Medical Sciences (NUMS), Rawalpindi Pakistan

DOI:

https://doi.org/10.51253/pafmj.v75i5.11751

Keywords:

Anaesthesia, Ankle, Block, Femoropopliteal, Spinal, Surgery

Abstract

Objective: To compare the sensory, motor, block duration and added analgesia requirements between ultrasound guided Femoropopliteal block and Spinal Anaesthesia in patients with malleolar fractures of the ankle.

Study Design: Randomized controlled trial (IRCT: 74290).

Place and Duration of Study: Department of Anaesthesiology, Combined Military Hospital, Rawalpindi Pakistan, from Aug 2023 to Feb 2024.

Methodology: One hundred ninety patients were analyzed randomized into the Spinal Anesthesia Group (Group S) (n=95) and the Femoropopliteal Block Group (Group F) (n=95). Primary variables measured were mean time to first rescue analgesia, patient satisfaction for pain relief 24 hours after surgery and 24- hour total dose of analgesia needed. Secondary variables observed were nausea/vomiting, hypotension, and headache 24-hours post-operatively.

Results: In the primary variables studied, mean time to require rescue analgesia as first dose was 3.780.54 hours in Group S versus 7.140.60 hours in Group F (p<0.001). Mean total dose of analgesia required in 24 hours post-operatively was 12.561.06 mg in Group S versus 6.290.63 mg in Group F (p<0.001).

Conclusion: Spinal Anesthesia provides early sensory and motor onset but Femoropopliteal block is superior when comparing block duration and total dose of analgesia needed in 24 hours post-operatively.

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Published

31-10-2025

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Original Articles

How to Cite

1.
Shabbir A, Buland K, Zafar J, Hayat MA, Zakria N ul I, Shah SAA. Comparison of Ultrasound Guided Femoropopliteal Block versus Spinal Anaesthesia for Ankle Surgery. Pak Armed Forces Med J [Internet]. 2025 Oct. 31 [cited 2025 Nov. 2];75(5):1004-8. Available from: https://pafmj.org/PAFMJ/article/view/11751