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Dorsal cuneonavicular ligaments

The dorsal cuneonavicular ligaments are small yet essential fibrous bands that stabilize the cuneonavicular joint complex of the midfoot. They connect the navicular bone to the three cuneiform bones (medial, intermediate, and lateral) on the dorsal surface of the foot.

These ligaments form part of the dorsal tarsal ligament complex, working alongside the plantar and interosseous cuneonavicular ligaments to maintain the integrity and alignment of the midtarsal region. They prevent excessive dorsal displacement and contribute to the stability and coordinated motion of the medial longitudinal arch during gait.

Synonyms

  • Dorsal ligaments of the cuneonavicular joint

  • Dorsal tarsal ligaments (cuneonavicular portion)

Attachments (Origin and Insertion)

  • Origin: Dorsal surface of the navicular bone

  • Insertion: Dorsal surfaces of the medial, intermediate, and lateral cuneiform bones
    Each cuneonavicular joint has a distinct dorsal ligament, though the fibers often intermix and form a continuous band across the dorsal midfoot.

Course

The ligaments pass horizontally across the dorsal surface of the foot, forming a fibrous reinforcement between the navicular and cuneiform bones. They blend with the dorsal joint capsule of the cuneonavicular articulation and interconnect with the intercuneiform dorsal ligaments, creating a strong fibrous network.

Relations

  • Superiorly: Dorsal tendons of tibialis anterior and extensor hallucis longus

  • Inferiorly: Cuneonavicular joint capsule and articular cartilage surfaces

  • Medially: Medial cuneiform and navicular tuberosity

  • Laterally: Intermediate and lateral cuneiforms

  • Deep to: Dorsalis pedis artery and deep fibular nerve branches as they pass over the tarsal region

Function

  • Joint stabilization: Maintains alignment between the navicular and cuneiform bones

  • Arch support: Reinforces the medial longitudinal arch of the foot

  • Restriction of motion: Limits excessive dorsal and plantar gliding at the cuneonavicular joints

  • Force transmission: Contributes to even load transfer between the hindfoot and forefoot during stance and propulsion

Clinical Significance

  • Injury: May be involved in midtarsal sprains, dorsal midfoot strain, or Lisfranc-type injuries

  • Degeneration: Chronic overuse or osteoarthritis can lead to ligament thickening or fibrosis

  • Trauma: Isolated ligament tears are rare but may occur in dorsal midfoot trauma or hyperflexion injuries

  • Pain presentation: Dorsal midfoot pain, tenderness over the naviculocuneiform joint, and difficulty in foot push-off

  • Imaging role: MRI is ideal for assessing ligament integrity and associated joint pathology; CT defines bony alignment and fractures

MRI Appearance

  • T1-weighted images:

    • Ligaments appear as low-signal (dark) linear bands extending between the dorsal navicular and cuneiforms

    • Adjacent bones show intermediate marrow signal

    • In partial tears: focal thickening or discontinuity with intermediate signal intensity

  • T2-weighted images:

    • Normal ligament: low signal intensity, darker than surrounding muscle

    • Partial tear or sprain: bright or heterogeneous hyperintense signal within ligament fibers

    • Adjacent joint effusion or synovitis: hyperintense joint fluid along dorsal capsule

  • STIR (Short Tau Inversion Recovery):

    • Normal ligament: low signal

    • Pathology (sprain, strain, tear): bright hyperintense due to edema or fluid accumulation

    • Helps identify subtle dorsal soft-tissue edema in midfoot injuries

  • Proton Density Fat-Saturated (PD FS):

    • Normal: low-signal linear structure sharply defined between bones

    • Sprain or tear: focal or diffuse bright hyperintense signal, sometimes with surrounding soft-tissue edema

    • Excellent for detecting subtle fiber disruption or capsular injury

  • T1 Fat-Sat Post-Contrast:

    • Normal: minimal or no enhancement

    • Inflamed or torn ligament: enhancement along fibers or adjacent synovial tissue

    • Useful to distinguish chronic scarring (non-enhancing) from active inflammation (enhancing)

CT Appearance

Non-Contrast CT:

  • Ligaments are not directly visible but can be inferred by the close apposition and alignment of the navicular and cuneiform bones

  • Subtle irregularity, loss of joint congruity, or dorsal avulsion fragments suggest ligament injury

  • Chronic changes may show osteophytes or cortical sclerosis along the dorsal articular margins

Post-Contrast CT (standard):

  • No significant ligament enhancement

  • Adjacent soft-tissue swelling or fluid may be noted in acute injuries

  • Joint malalignment or small avulsion fragments at the dorsal cuneonavicular interface may indicate ligament disruption

MRI image

Dorsal cuneonavicular ligaments coronal cross sectional anatomy 3T MRI AI enhanced radiology image-img-00000-00000

MRI image

Dorsal cuneonavicular ligaments sagittal cross sectional anatomy 3T MRI AI enhanced radiology image-img-00000-00000