ArticleScientific reports2022
Significance of the anatomical relationship between the flexor digitorum longus and sustentaculum tali for reconsideration of the talocalcaneonavicular joint stability mechanism.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 9 citations in OpenAlex.
- An Elastic Foot Orthosis for Limiting the Increase of Shear Modulus of Lower Leg Muscles after a Running Task: A Randomized Crossover Trial.International journal of environmental research and public health · 2022Trial
- Influence of retrocalcaneal bursal effusion on the mechanical behavior of the Achilles tendon insertion during ankle dorsiflexion: a cadaveric study.Surgical and radiologic anatomy : SRA · 2026Article
- Significance of fiber orientation in the interosseous sacroiliac ligament: An anatomical and histological study of the implications of its mechanical adaptation.Journal of anatomy · 2026Article
- Safe and Accurate Sustentaculum Screw Placement in Minimally Invasive Surgery for Calcaneal Fractures: The "Sustentaculum View" Technique.Journal of clinical medicine · 2026Article
- Electromyographic examination of a new exercise therapy for the intrinsic and extrinsic foot muscles.Journal of physical therapy science · 2025Article
- Anatomical and histological analyses of ankle plantar flexors: insights into connective tissue composition and muscle architecture.Surgical and radiologic anatomy : SRA · 2024Article
- Posteromedial capsular anatomy of the tibia for consideration of the medial meniscal support structure using a multidimensional analysis.Scientific reports · 2023Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The talocalcaneonavicular joint (TCN-j) is supported by the spring ligament, which has recently been revealed to be part of the joint capsule complex, along with the tendinous sheath of the tibialis posterior and flexor digitorum longus (FDL). Nonetheless, the FDL's role in TCN-j stability has received limited attention. This study aimed to elucidate the positional relationships between the FDL and sustentaculum tali, which comprises the TCN-j. We hypothesized that the FDL runs medial to the sustentaculum tali, and its course significantly changes from the sitting to the standing position. Six ankles from six body donors were investigated, and seven ankles from seven volunteers were assessed using ultrasonography. The FDL was three-dimensionally located inferomedial to the sustentaculum tali. The FDL tendinous sheath was attached to the sustentaculum tali or connected by the tibialis posterior via the tendinous sheath. Based on the in vivo ultrasound image, the FDL location relative to the sustentaculum tali was maintained; however, the curvature of the FDL course was significantly more prominent in standing than in sitting. The FDL force against the bending moment may prevent the excessive eversion of the foot and aid the conventional spring ligament's contribution to TCN-j stability for maintaining the longitudinal arch.
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