A metatarsal-cuneiform exostosis is a bony prominence at the first metatarsal-cuneiform joint. In some instances a bursa forms over the bone or mass.
There are several reasons this area can become prominent: 1) It is associated with a pes cavus foot (high arch), with this joint being at the top of the foot, 2) a hypermobile (too much movement) first metatarsal injury, 3) the gradual development of a growth created by abnormal foot mechanics, or 4) a neuritis may occur as shoe pressure compresses the medial branch of the deep peroneal nerve.
Other names or similar foot conditions:
- Tarsal boss
- Saddlebone deformity
- Peak of Lamphier
Symptoms:
- Firm to hard mass or bony prominence
- Tenderness with shoe gear
- Tingling, numbness or shooting pains on the top of the foot
Signs to look for:
- Obvious prominence
- Pain to the touch
- Difficulty with finding shoes that don’t irritate this area
- High arch foot
- History of injury at this site
Possible Causes:
- Heredity
- Injury
- Faulty body mechanics
- Shoes that press too much against this part of the foot
Goals:
- Take pressure off the site of the prominence
- Correct faulty body mechanics
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
- Smart footwear, such as heel to toe rockers, negative heel shoes or shoes with titanium springs
- If regular flip-flop wearer, wear only the Orthaheel, Alegria or Aetrex brand
- Go barefoot on a minimal basis only
- Wear pumps or heels only minimally
- Ensure shoes are not laced too tightly
Other:
- Padded tongue
- Skip lacing
- Spot stretching with ball and ringer stretcher
Activities:
- Rotate weight bearing exercises, such as walking or jogging, with non-weight bearing exercising, such as swimming or bicycling
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: A. Decker, S. Albert, Contemporary Pedorthics Text: A. Decker, S. Albert, Contemporary Pedorthics