Osteomalacia: A Cause of Bone Pain
22nd July 2023
Pes Planus Pes Cavus

Generally, “normal” has a broad range. The main arch in the foot sits along the inner border. The arch is meant to move, slightly flattening and arching again as you walk. But if it stays in one of those positions, it may be classified as pes planus (flat feet) or pes cavus (high arches).

Flat feet (pes planus) and high arches (pes cavus)

Without context, these labels mean very little. But if you suffer with pain in the foot, ankle, calf, or even beyond, the anatomy may be significant. The height of the arch at rest plays a role in dictating the angle of the Achilles tendon. If the arch is flat, the foot rolls inward, stretching the inner border of the tendon. The reverse is true for a high arch. This is easily identified when assessing the foot from behind while you stand. It may also be evident in the way your shoes wear- do you notice the sole is more worn on the inner or outer edge?

Local Effects of Flat Feet or High Arches

There are 26 bones in the feet. The high number relative to the area helps with shock absorption, but also allows mobility. Movements are small, as the feet are load bearing and need to be supportive, but they are still important. If the foot is weightbearing more towards one side, the joints will be under more pressure and may be restricted in their movement.

We’ve written about osteoarthritis before, and the importance of moving through the whole range of a joint. Long term restriction limits the cartilage’s ability to flush out waste and absorb nutrients, potentially leading to arthritic changes. Improving the mobility is a preventative measure against arthritis in the foot. There is also a connection between pes planus and cavus and plantar fasciitis: a condition in which the sole of the foot becomes painful.

Achilles Tendinopathy and Effects in the Leg

As mentioned above, one stark effect of unusual arches is the demand on the Achilles tendon. Achilles tendinopathy develops as the result of repeated microtrauma. With that in mind, it’s unsurprising that it has a link with pes planus and cavus. The good news is that conservative treatments are generally effective, and your osteopath can provide these.

If you notice soreness in the tendon, or an ache in the calf muscle itself, click the link below to book an appointment.

Elsewhere in the Body

The body is good at adapting, and if you have always had unusual arches, you may be otherwise symptom free. If, however, the demand is too much for you, or if only one foot is affected, you may develop aches and pains further up. No one is perfectly symmetrical, and your osteopath’s goal is more about helping your body to adapt comfortably than trying to “correct” any asymmetries. If you find that your high or fallen arch leads to:

  • landing heavier on one foot while walking
  • a jarring pain in your lower back
  • tension throughout the leg

It may be time to book an appointment.

Click here to make an appointment for your arches in Leicestershire or Rutland

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