Abstract
Functional Popliteal Entrapment Syndrome (FPES) is caused by compression of neurovascular structures in the popliteal fossa by hypertrophic muscles, provoking severe leg pain with exercise. Treatment is limited to myotomy of hypertrophic musculature. 8 FPES patients underwent imaging and exercise studies, before receiving botulinum toxin A injections (BTX-A) into the gastrocnemius and plantaris muscles. 81.3 % of patients reported clinical improvement on follow-up, and pathological ankle–brachial indices were normalized. BTX-A injection may present a new, safe, effective and non-invasive approach to FPES.
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Acknowledgments
We thank Georg Ebersbach and Doreen Gruber for discussion of results and assistance in statistical analysis.
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702_2014_1197_MOESM1_ESM.tif
Supplementary material 1 (TIFF 13681 kb). Angiography of a patient with FPES: complete occlusion of the right and significant compression of the left popliteal artery. (A: angiography of the right leg, B: of the left leg. x.1: investigations at rest. x.2: provoked plantar flexion with the angiography table tilted at 30°). Arrows indicate site of compression of popliteal artery by musculature during forced plantar flexion
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Gandor, F., Tisch, S., Grabs, A.J. et al. Botulinum toxin A in functional popliteal entrapment syndrome: a new approach to a difficult diagnosis. J Neural Transm 121, 1297–1301 (2014). https://doi.org/10.1007/s00702-014-1197-z
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DOI: https://doi.org/10.1007/s00702-014-1197-z