Generally, early arthritis develops due to injury. Whilst this can happen in a single traumatic event, it can also happen over a period of low-grade repetitive micro-trauma. When this occurs, the cartilage at the joints begin to erode away, allowing only bone to rub against each other. Extra bone can deposit around the edges of the joint, limiting its range of motion. Arthritis is a progressive condition and will unfortunately worsen over time. Depending on the severity, initial treatment may involve a change in footwear and an accomodative orthotic.
There is a 'cuboid' shaped bone on the outside part of the foot. Sometimes, with over use or a sudden/exaggerated movement, the tendon which attaches around the cuboid can cause an excessive pulling motion and cause subluxation or tendon injury. Treatment may involve rest, ice, compression/taping, exercises and an orthotic to address the foot biomechanically.
An extra bone is known as an accessory bone. In this case, there is an extra bone around the navicular bone. A major tendon; posterior tibialis tendon, attaches to this bone. It can become painful and aggravated with tight shoes, which rubs against it, flat feet which increases the strain on the tendon. Treatment will involve rest and ice to bring down any inflammation, footwear advice and orthotics to correct the foot biomechanics, to stabilise and support the navicular.
A plantar fibroma is a benign nodule/lump, under the arch of your foot, within the plantar fascia (thick fibrous band of tissue under your arch). The size can vary or become larger over time. Multiple fibroma's may also occur beside it. Initial treatment may involve an orthotic to reduce tension/pressure from the nodule.
Posterior Tibialis Tendon Dysfunction (PTTD)
A major tendon in the foot; posterior tibial tendon, which runs along the inside of the ankle can become damaged from long term over use or trauma, which causes the tendon to weaken and eventually degenerate. This may also lead to flat feet. Treatment plan will vary, depending on the stage it's at, however, intially RICE and an orthotic may be used to support the arch.