The central band of the plantar aponeurosis is the thickest and strongest component, running from the medial calcaneal tuberosity to the five flexor tendon sheaths and plantar plates of the MTP joints, providing the primary plantar arch support.
Provides the primary support for the medial longitudinal arch through the windlass mechanism, distributes forces during push-off, constrains plantar foot expansion during loading, and generates the arch stiffening needed for efficient push-off.
Plantar fasciitis (most common cause of heel pain) involves degeneration at the central band calcaneal insertion. The windlass test (passive dorsiflexion of the toes tensioning the central band) reproduces symptoms. Plantar fascia release addresses refractory cases but risks arch collapse.
Degenerative tendinopathy at the medial calcaneal insertion of the central band producing heel pain worse with first steps, managed by stretching, orthotics, and injection.
Acute central band rupture from forceful push-off producing sudden heel pain and arch flattening, managed conservatively with arch support.
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