Tibialis Posterior Dysfunction
Tibialis posterior dysfunction is a broad term describing injury or disease in the tendon of one of the muscles in the calf. This disorder is also known as posterior tibialis tendon dysfunction, or PTTD, and posterior tibialis tendonitis, tendonosis or tendinopathy, and posterior tibialis insufficiency. All of these terms describe different types or degrees of injury to the tendon resulting.
The posterior tibialis muscle is found deep on the back of your calf. It begins near the knee, joins its tendon just above the ankle and runs down to attach to a bone (navicular) on the inner surface of your foot. This allows it to support the instep arch, a key component of normal, painless walking. This muscle is also partly responsible for pointing your foot down ('plantar flexion') and in ('pronation').
Tibialis Posterior dysfunction refers to injury or disease affecting the tendon, the strong band of tissue that connects muscle to bone. Injury to the tendon occurs when the tendon is overstretched or strained. Lots of tiny tears in the tendon results in inflammation - a process called tendinitis.
There are a number of different symptoms associated with PTTD, including pain along the inner side of the lower leg, ankle or foot. PTTD is also associated with the development of flatfoot deformity.