Medial head of flexor hallucis brevis
Caput mediale flexoris brevis hallucis
- Related terms: Medial head; Flexor hallucis brevis - Medial head; Flexor hallucis brevis (Medial head)
Definition
The medial head of the flexor hallucis brevis (FHB) is one of the two heads of the FHB muscle, the other being the lateral head.
The medial head of the flexor hallucis brevis originates from the medial aspect of the cuboid bone and the lateral cuneiform bone. It then courses distally to insert into the medial sesamoid bone and the base of the proximal phalanx of the hallux (big toe). The medial head of the FHB works in conjunction with the lateral head to flex the proximal phalanx of the hallux at the MTP joint.
The insertional anatomy of the medial head of the FHB has been studied in cadaveric specimens. According to Hakim-Zargar et al., the mean length of the medial FHB insertion is approximately 8.0 ± 0.5 mm, and the mean width is about 8.8 ± 1.4 mm.[1]
References
1.Implications for the Anatomy of the Flexor Hallucis Brevis Insertion.Hakim-Zargar M, Aronow MS, Gibson L, Obopilwe E.Foot & Ankle International. 2010;31(1):65-8. doi:10.3113/FAI.2010.0065
