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Folia Morphol (Warsz). 2019 Jan 21. doi: 10.5603/FM.a2019.0007. [Epub ahead of print]

Innervation of flexor hallucis longus muscle: an anatomical study for selective neurotomy.

Author information

1
Department of Anatomy - University of Strasbourg, 4 rue Kirschleger, 67000 Strasbourg, France; CHRU Strasbourg, 1 place de l hopital, 67000 Strasbourg, France. guillaume.koch@unistra.fr.
2
CHRU Strasbourg, 1 place de l hopital, 67000 Strasbourg, France.
3
Queen Elizabeth Hospital, 30 Gascoigne Road, King's Park, Kowloon, Hong Kong.
4
Department of Anatomy - University of Strasbourg, 4 rue Kirschleger, 67000 Strasbourg, France; Department of Orthopedic Surgery - CCOM, Strasbourg University Hospital, 10 avenue Baumann, 67304 Illkirch, France.

Abstract

BACKGROUND:

to describe the innervation of flexor hallucis longus (FHL) and obtain its surgical coordinates to facilitate selective neurotomy.

MATERIALS AND METHODS:

15 embalmed lower limbs of adults were studied. Anatomical dissections to isolate the innervating branches of FHL were performed. Distance between the supplying nerve of FHL, including the both its origin and termination, and the medial malleolus were obtained, providing anatomical coordinates beneficial for surgery.

RESULTS:

In all cases, FHL was innervated by only one branch, which originated from the tibial nerve. Mean distance between the medial malleolus and the nervous branch origin was 21.39 cm ± 3.05 cm. Mean distance between the medial malleolus and the nervous branch termination was 12.7 cm ± 1.59 cm. Length of the nervous branch innervating FHL was proportional to the length of the leg, measuring 8.69 cm ± 2.45 cm. All nerves were located 15-17.4 cm above the medial malleolus.

CONCLUSIONS:

This anatomical study traced valuable surgical coordinates useful for performing selective peripheral neurotomy on the nerve branch innervating the FHL.

KEYWORDS:

flexor hallucis longus; hallux claw toe; nerve; neurotomy

PMID:
30664228
DOI:
10.5603/FM.a2019.0007
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