Sesamoiditis is defined simply as inflammation of a sesamoid bone, of which there are two underlying the 1st metatarsal head. Inflammation of one or both of these bones, or the surrounding soft tissue, can lead to pain or stress fracture. Running with this painful condition can prove to be difficult since this is the site where a majority of your body weight and force is transmitted while exercising. If you experience pain or swelling in the ‘ball’ of your foot under your big toe, you may have sesamoiditis.
Potential Causes of Sesamoiditis:
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Arthritic changes due to wear/tear and old age
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Weak bones due to osteoporosis in women of post-menopausal age
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Runners with a high arch foot type place an increased amount of strain on their forefoot, specifically the 1st metatarsal head
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Runners with flat feet who must overcome the over-pronation during the gait cycle by rapidly re-supinating their feet inwards
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Repetitive stress while running
Prevention/Treatment:
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Avoid hills and running on uneven terrain which may cause unnecessary impact on your sesamoid bones can lead to further injury and damage-it is advised to run on flat, even ground (grass if possible).
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Custom orthotics with adequate arch support will benefit both flat and high arched runners to bring the ground up to runner’s foot with a high arch and to provide an arch in runners with flat feet.
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Sesamoid relief cutouts may be used to off-load and decrease loading during running; similarly, padding or gel may be employed to decrease pressure or stress on the sesamoid bones.
If you are suffering from sesamoiditis or pain while running, please give us a call at 406-721-4007 so we can get you back on track.
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