Overview
The tibialis posterior runs down the medial (inside) and posterior (back) of the ankle. The tibialis posterior tendon functions to stop the ankle from rolling inwards and the medial arch collapsing. This tendon can either completely rupture or develop tears along the length of it (tendonitis/dysfunction). Symptoms of tibailis posterior dysfunction/tendonitis or rupture include severe pes planus (flat foot deformity), pain on the medial (inside) of the ankle. swelling on the medial side of the ankle. pain on the lateral (outside) of the ankle, inability or difficulty doing a single leg calf raise.

Causes
If the feet are exposed to damp conditions for prolonged periods, you can develop Trench Foot. Most commonly associated with World War One, it now tends to be seen in builders, hikers or festival goers. Trench foot causing numbness and bottom of foot pain. With Trench Foot, the sole of the foot turns a white/grey colour and you may develop pins and needles or numbness. Other symptoms include pain in bottom of foot and swelling. If left untreated, you can develop blisters and permanent nerve damage which can lead to the need for amputation. Treatment and prevention aim to reduce the dampness around the foot and ensure good foot hygiene. Slowly rewarming the feet and using special products in a foot bath really helps reduce the damage and foot arch pain from Trench Foot.
Symptoms
Flat feet can exhibit a variety of symptoms, from mild to severe. The extent of the flat foto does not always correlate with the extent of symptoms. Patients may complain of arch pain and heel pain. Commonly there is pain on the outside of the foot, where the foot meets the ankle as the collapse foot abuts against the ankle. Muscle cramps within the foot, and onto the leg (shin splints) may occur. In general, patients have pain with activity, such as walking or running. The pain may be deep and focal to a generalized widespread achy feeling. Irritation from shoe gear can cause redness and swelling. Common reasons patients seek treatment are pain, interference with walking or activities, difficulty fitting shoes, swelling, and notice a change in appearance of the foot and/or unsightly appearance.
Diagnosis
The doctor will examine your feet for foot flexibility and range of motion and feel for any tenderness or bony abnormalities. Depending on the results of this physical examination, foot X-rays may be recommended. X-rays are always performed in a young child with rigid flatfeet and in an adult with acquired flatfeet due to trauma.
Non Surgical Treatment
Treatment for these injuries varies depending on the severity of the injury. Most strains and sprains can be treated with rest, ice, compression and elevation (RICE). Moderate to severe cases, however, may require some form of immobilization such as a brace or a cast. Certain injuries that don't heal within the expected time frame may require surgery. It is important to seek medical attention as soon as possible for foot and ankle injuries, especially if it is causing you to limp or there is swelling. Prompt and appropriate treatment and rehabilitation ensures the best possible recovery.

Surgical Treatment
In adults, the most common cause of collapse is due to the posterior tibial tendon tear. In such cases, the tendon must be repaired and a second tendon may be added to the posterior tibial tendon for strength and added support. If the foot is found to be very flat, bone realignment procedures or possible bone fusion procedures may be used to realign the foot. If the calf or Achilles tendon are found to be tight, they may be lengthened to allow better motion at the ankle and less arch strain. The forefoot may also be in a poor position and stabilization of the arch may be necessary to increase forefoot contact to the ground.
Stretching Exercises
Below are two simple plantar fasciitis stretching exercises to help improve the flexibility of the muscles and tendons around the foot and ankle. Plantar fasciitis stretch taken from The Stretching Handbook. Kneel on one foot and place your body weight over your knee. Keep your heel on the ground and lean forward. In the photo to the left, the athlete is stretching the arch of her left foot. Kneel on one foot with your hands on the ground. Place your body weight over your knee and slowly move your knee forward. Keep your toes on the ground and arch your foot. In the photo to the right, the athlete is stretching the arch of his right foot.
The tibialis posterior runs down the medial (inside) and posterior (back) of the ankle. The tibialis posterior tendon functions to stop the ankle from rolling inwards and the medial arch collapsing. This tendon can either completely rupture or develop tears along the length of it (tendonitis/dysfunction). Symptoms of tibailis posterior dysfunction/tendonitis or rupture include severe pes planus (flat foot deformity), pain on the medial (inside) of the ankle. swelling on the medial side of the ankle. pain on the lateral (outside) of the ankle, inability or difficulty doing a single leg calf raise.

Causes
If the feet are exposed to damp conditions for prolonged periods, you can develop Trench Foot. Most commonly associated with World War One, it now tends to be seen in builders, hikers or festival goers. Trench foot causing numbness and bottom of foot pain. With Trench Foot, the sole of the foot turns a white/grey colour and you may develop pins and needles or numbness. Other symptoms include pain in bottom of foot and swelling. If left untreated, you can develop blisters and permanent nerve damage which can lead to the need for amputation. Treatment and prevention aim to reduce the dampness around the foot and ensure good foot hygiene. Slowly rewarming the feet and using special products in a foot bath really helps reduce the damage and foot arch pain from Trench Foot.
Symptoms
Flat feet can exhibit a variety of symptoms, from mild to severe. The extent of the flat foto does not always correlate with the extent of symptoms. Patients may complain of arch pain and heel pain. Commonly there is pain on the outside of the foot, where the foot meets the ankle as the collapse foot abuts against the ankle. Muscle cramps within the foot, and onto the leg (shin splints) may occur. In general, patients have pain with activity, such as walking or running. The pain may be deep and focal to a generalized widespread achy feeling. Irritation from shoe gear can cause redness and swelling. Common reasons patients seek treatment are pain, interference with walking or activities, difficulty fitting shoes, swelling, and notice a change in appearance of the foot and/or unsightly appearance.
Diagnosis
The doctor will examine your feet for foot flexibility and range of motion and feel for any tenderness or bony abnormalities. Depending on the results of this physical examination, foot X-rays may be recommended. X-rays are always performed in a young child with rigid flatfeet and in an adult with acquired flatfeet due to trauma.
Non Surgical Treatment
Treatment for these injuries varies depending on the severity of the injury. Most strains and sprains can be treated with rest, ice, compression and elevation (RICE). Moderate to severe cases, however, may require some form of immobilization such as a brace or a cast. Certain injuries that don't heal within the expected time frame may require surgery. It is important to seek medical attention as soon as possible for foot and ankle injuries, especially if it is causing you to limp or there is swelling. Prompt and appropriate treatment and rehabilitation ensures the best possible recovery.

Surgical Treatment
In adults, the most common cause of collapse is due to the posterior tibial tendon tear. In such cases, the tendon must be repaired and a second tendon may be added to the posterior tibial tendon for strength and added support. If the foot is found to be very flat, bone realignment procedures or possible bone fusion procedures may be used to realign the foot. If the calf or Achilles tendon are found to be tight, they may be lengthened to allow better motion at the ankle and less arch strain. The forefoot may also be in a poor position and stabilization of the arch may be necessary to increase forefoot contact to the ground.
Stretching Exercises
Below are two simple plantar fasciitis stretching exercises to help improve the flexibility of the muscles and tendons around the foot and ankle. Plantar fasciitis stretch taken from The Stretching Handbook. Kneel on one foot and place your body weight over your knee. Keep your heel on the ground and lean forward. In the photo to the left, the athlete is stretching the arch of her left foot. Kneel on one foot with your hands on the ground. Place your body weight over your knee and slowly move your knee forward. Keep your toes on the ground and arch your foot. In the photo to the right, the athlete is stretching the arch of his right foot.