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Year : 2021  |  Volume : 10  |  Issue : 2  |  Page : 66-69

The study of anatomy of tarsal tunnel in human fetuses by dissection method

1 Associate Professor, Department of Anatomy, Akash Institute of Medical Sciences and Research Centre, Bengaluru, Karnataka, India
2 Associate Professor, Department of Anatomy, Sapthagiri Institute of Medical Sciences and Research Centre, Bengaluru, Karnataka, India
3 Additional Professor, Department of Anatomy, SDM College of Medical Sciences and Hospital, Dharwad, Karnataka, India
4 Consultant, Department of Ophthalmology, Sakra World Hospital, Bengaluru, Karnataka, India

Correspondence Address:
B R Chaithra Rao
Department of Anatomy, Akash Institute of Medical Sciences and Research Centre, Prasannahalli Main Road, Near Kempegowda International Airport, Devanahalli, Bengaluru - 562 110, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/NJCA.NJCA_85_20

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Background: The flexor retinaculum of foot extends from the medial malleolus to the calcaneus to form the roof of tarsal tunnel. The structures passing through the tunnel are tendons of tibialis posterior, flexor digitorum longus & flexor hallucis longus, the tibial nerve & the posterior tibial artery with its venae comitantes. In order to understand the pathogenesis and improve the treatment of tarsal tunnel syndrome, we investigated the tarsal region of human foetuses anatomically. Methodology: The study was done on aborted/ stillborn foetuses in the Department of Anatomy of Sapthagiri Institute of Medical, Sciences, Bangalore. The structures passing under the flexor retinaculum of foot were dissected in 68 normal limbs of 34 foetuses of gestational age ranging from 10 weeks to term. Results: It was noted that the structures were arranged in two planes. Most commonly the superficial plane contained the tendon of tibialis posterior, posterior tibial artery & tibial nerve from medial to lateral side. In the deeper plane were the tendons of flexor digitorum longus medial to that of flexor hallucis longus. The bifurcation of tibial nerve mostly occurred under cover of flexor retinaculum and that of posterior tibial artery was distal to it. Conclusion: The understanding of arrangement of structures under cover of flexor retinaculum is important for diagnosis and treatment of tarsal tunnel syndrome in adults and also for the surgical correction of clubfoot, poliomyelitis & other deformities of foot in children.

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