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Erkrankungen
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Posterior tibial tendon dysfunction (PTTD) is the most common cause of acquired adult flatfoot deformity. The posterior tibial tendon supports the medial longitudinal arch and controls hindfoot inversion during gait. When the tendon degenerates, it progressively elongates and loses its mechanical advantage, leading to arch collapse and hindfoot valgus. PTTD is staged from I to IV: Stage I involves tendinopathy with a normal arch, Stage II shows flexible flatfoot deformity, Stage III presents rigid deformity with subtalar arthritis, and Stage IV adds ankle valgus tilt. MRI is essential for evaluating tendon integrity, staging the disease, and assessing associated spring ligament damage. Our AI consortium analyzes tendon morphology, peritendinous changes, and hindfoot alignment across multiple sequences.
Staging guides treatment from conservative to surgical options. Stage I and early Stage II often respond to bracing, physical therapy, and custom orthotics. Late Stage II may require tendon transfer and calcaneal osteotomy. Stage III typically needs hindfoot fusion, and Stage IV may require ankle replacement or tibiotalocalcaneal fusion. Our AI helps assess tendon and ligament integrity to support accurate staging.
The spring ligament is a critical static stabilizer of the medial longitudinal arch. When the posterior tibial tendon fails, increased stress transfers to the spring ligament, and its subsequent attenuation accelerates arch collapse. MRI assessment of spring ligament integrity is essential for surgical planning and predicting outcomes. Our AI evaluates both structures together for comprehensive analysis.
Yes. MRI can identify tendinopathy, peritendinous edema, and early split tears in Stage I PTTD before clinically apparent arch collapse occurs. Early detection allows intervention with bracing and targeted rehabilitation to slow disease progression. Our AI consortium detects subtle signal changes and tendon caliber abnormalities that may indicate early dysfunction.
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