The dorsal talar neck ligament reinforces the dorsal aspect of the talonavicular joint and the talar neck region, providing the superior constraint of this critical articulation.
Provides dorsal talonavicular constraint, reinforces the talar neck against dorsal displacement of the navicular, and contributes to the overall midtarsal stability.
Talar neck fractures disrupt the dorsal ligamentous attachments, contributing to navicular and talar body displacement. The Hawkins classification of talar neck fractures correlates with avascular necrosis risk based on the degree of ligamentous disruption and vascular supply compromise.
Subchondral osteoporosis of the talar dome visible 6-8 weeks after talar neck fracture indicates intact blood supply and reduced AVN risk — its absence suggests vascular compromise requiring close monitoring.
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