Victorian Orthopaedic Foot & Ankle Clinic
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Flatfoot Deformity

The development of flatfoot deformity in the adult is often the result of a rupture of the tibialis posterior tendon. Usually when this happens the foot will become progressively more deformed over time. Pain and swelling are often noticed on the inside of the foot and ankle. Although treatment with special shoes, orthotic arch supports or a brace may be temporarily successful, many patients eventually require surgery.

The surgery may involve reconstruction of the tibialis posterior tendon with an adjacent tendon. Frequently this is combined with a surgery on the heel bone or possibly with a fusion of selected joints of the hindfoot in order to straighten the foot.

Case - 1  

Pre Operative - Flatfoot Deformity  - Victorian Orthopaedic Foot & Ankle Clinic

Preoperative photograph taken from behind of a patient with severe tibialis posterior tendon dysfunction and arthritis of the joints below the ankle joint. Note that the bulging deformity of the inside of the foot at the site of the break in the arch of the foot (see arrow).

Post Operative - Flatfoot Deformity  - Victorian Orthopaedic Foot & Ankle Clinic

Post-operative photograph taken from behind of the same foot following a triple arthrodesis which has corrected the deformity of the foot.

Post Operative - Triple Arthrodesis - X-ray - Victorian Orthopaedic Foot & Ankle Clinic

Post-operative x-ray of the foot following triple arthrodesis (fusion). Three screws have been used to hold the bones together while the fusion site heals.

 
Case - 2 Arthroereisis Plug Animation  

Pre Operative - Tibialis Posterior Tendon Disfunction  - Victorian Orthopaedic Foot & Ankle Clinic

Preoperative picture of patient with severe Tibialis Posterior tendon dysfunction. Note that the heel on the right is drifting to the side which accentuates the collapse of the arch of the foot

Post Operative - Osteotomy - X-ray - Victorian Orthopaedic Foot & Ankle Clinic

Postoperative X-Ray showing an osteotomy of the heel bone to realign it. This surgery ensures proper of the ankle and heel.

Post Operative - Osteotomy - X-ray - Victorian Orthopaedic Foot & Ankle Clinic

Along with the heel bone osteotomy, a tendon transfer is performed to replace the worn out Tibialis posterior tendon. To maintain correct alignment while the tendon transfer heals, a special plug (arthroereisis plug) is used. The plug is evident on this X-ray as the round white structure.

Post Operative - Arthroereisis Plug - Model - Victorian Orthopaedic Foot & Ankle Clinic

This model shows the accurate positioning of the arthroereisis plug

Animation of the arthroereisis plug, described above, is often used to maintain deformity correction while the soft tissues heal

 

 

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