Tarsal coalition is a condition that probably exists from birth with symptoms appearing in late adolescence and early adulthood. It refers to the abnormal fusing of bones in the tarsal area of the foot, most commonly between the talus and calcaneous (more toward the ankle) or the calcaneous and the navicular (more toward the midfoot). It may also be known as, or confused with, PTTD (posterior tibialis tendon dysfunction) or a rigid flatfoot. It most commonly appears in just one foot.
The fusing of the bones prevents movement between the affected tarsal bones. The fusing can occur with the bone itself or in the cartilage or fibrous material. It may be asymptomatic. However, symptoms can be induced by trauma, prolonged standing, marching or jumping.
Other names or similar foot conditions:
- Rigid flatfoot
- PTTD
Symptoms:
- There may be no symptoms or only symptoms with higher impact activities
- Where there are symptoms, there is pain at the coalition site
Signs to look for:
- Tarsal area of the foot falls medially (inward) while the other foot does not
- Rigid flat foot
- Age – late adolescence or early adulthood
- Trauma at the site
Possible Causes:
- Congenital
- Injury
Goals:
- Provide support for heel and mid foot
- Create an arch that will correct as much motion of the foot while walking as possible
- Restore alignment to the ankle, top of the foot and knees as much as possible
- Cushion impact of body weight on feet, legs and spine
How We Help:
Arch Supports:
- BioOrthotics exercising support with metatarsal lift
- Lower and thinner arch support with longitudinal and metatarsal support for use when shoes cannot accommodate the BioOrthotics exercising support
Shoes:
- Extra depth, double or triple depth shoe with high toe box, firm heel counter, rocker sole and connecting shank with straight last
- Straight last
- Smart footwear, such as stable heel to rocker soles, negative heel shoes or shoes with titanium springs
- Avoid flip-flops. Only wear sandals with a back and only the Orthaheel, Alegria or Aetrex brand
- Go barefoot on a minimal basis only
- Wear heels and pumps only as long as absolutely necessary
Activities:
- Regular stretching program before and after exercise
- Concentrate on non-impact physical exercising, such as on an elliptical and Pilates
This information does not constitute a diagnosis of your condition and does not take the place of a doctor’s care. The information has been compiled from sources available to the general public and referenced below. Copyright 2007-2010 Carole Romig
Sources Image: footandankle.mdmercy.com Text: R. Cailliet, MD, Foot and Ankle Pain, D. Janisse, CPed, Editor, Introduction to Pedorthics