Tibialis posterior tendon

A crucial tendon that supports the arch of the foot and aids in balance and walking.

The tibialis posterior tendon is a strong band of fibrous tissue that connects the tibialis posterior muscle to the bones of the foot. This tendon plays a vital role in the foot's stability and function, particularly by supporting the medial arch. It runs along the inside of the ankle and foot, contributing significantly to various movements.

Terminologia Anatomica

tendo-tibialis-posterior

System

Musculoskeletal system

Function

The primary function of the tibialis posterior tendon is to facilitate foot movement and maintain stability during walking, running, and standing. It plays an essential role in the inversion of the foot, which means it helps to turn the sole inward. This activity aids in maintaining balance and preventing excessive rolling of the ankle, which is crucial for athletes and individuals engaging in dynamic movements. Additionally, the tendon supports the medial arch of the foot, helping to absorb shock and distribute body weight evenly across the foot when walking or standing. Without the proper function of the tibialis posterior tendon, the individual may experience conditions such as flat feet or posterior tibial tendon dysfunction, leading to pain and instability.

Location

The tibialis posterior tendon is located on the medial side of the leg and foot. It originates from the tibialis posterior muscle, which is situated in the deep posterior compartment of the leg, lying behind the shin bone (tibia). The tendon travels downwards, passing behind the medial malleolus, which is the bony prominence on the inside of the ankle. After passing under this bony structure, the tendon inserts into multiple bones in the foot, including the navicular, several cuneiforms, and the bases of the second, third, and fourth metatarsals. This strategic location allows the tendon to exert its influence directly over foot movements.

Did You Know?

The tibialis posterior tendon is critically involved in maintaining the arch of the foot, which is essential for proper weight distribution.
In many athletic injuries, issues with the tibialis posterior tendon can lead to instability and pain, commonly affecting runners and active individuals.
Rehabilitation exercises for the tibialis posterior tendon can significantly improve foot biomechanics and overall lower limb function.