Adult Acquired Flatfoot — Posterior Tibial Tendon Dysfunction (PTTD)
Most common cause of adult acquired flatfoot; due to PTT degeneration/rupture. Stages I–IV (Johnson & Strom classification). Clinical: medial ankle pain, progressive collapse of medial arch, hindfoot valgus. Imaging: MRI shows tendon degeneration; weight-bearing X-rays show arch collapse. Treatment: Stage I—orthoses, NSAIDs; Stage II—tendon transfer + osteotomy; Stage III/IV—arthrodesis.
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10What is the most common cause of adult acquired flatfoot deformity?
mcqIn the Johnson & Strom classification, what characterizes Stage I PTTD?
mcqWhich of the following is NOT a risk factor for developing posterior tibial tendon dysfunction?
mcqWhat is the primary clinical sign indicating forefoot abduction in adult acquired flatfoot?
mcqWhich imaging modality is best to assess tendon degeneration in PTTD?
mcqWhat is the recommended initial treatment for Stage II PTTD?
mcqIn Stage III PTTD, which of the following is likely to be observed?
mcqWhat is the appropriate surgical intervention for Stage IV PTTD with tibiotalocalcaneal involvement?
mcqWhich clinical test assesses the ability of the posterior tibial tendon to support the medial arch?
mcqWhat is the significance of the 'too many toes' sign in PTTD?