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PATHOLOGIES
tendon and soft tissue conditions
Tibialis Posterior Tendonitis
What is it?
Tibialis posterior tendonitis (or dysfunction) is an inflammation or degeneration of the tendon that runs along the inside of the ankle and supports the arch of the foot. It’s one of the most important tendons for maintaining stability when walking and standing. Overuse or injury can lead to pain, swelling, and sometimes progressive flattening of the arch.
CAUSES
- Overuse or repetitive strain (especially in runners or those on their feet all day)
- Acute injury or ankle sprain
- Degenerative changes in middle age
- Poor footwear or flatfoot deformity
SYMPTOMS
- Pain and swelling along the inside of the ankle or foot
- Tenderness behind the medial malleolus (inside ankle bone)
- Pain that worsens with activity, particularly walking or running
- Flattening of the arch and “rolling in” of the ankle over time
DIAGNOSIS
Diagnosis is made by clinical examination and may be supported by imaging such as ultrasound or MRI to assess the tendon for inflammation or tearing.
TREATMENT
- Early stage: rest, anti-inflammatories, physiotherapy, orthotics to support the arch
- Persistent or advanced cases: custom bracing, immobilisation in a boot, or surgery to repair or reconstruct the tendon and restore alignment
