runner's bump - Foot and Ankle

Summary
Description

Runners who average more than 30 miles per week occasionally develop a mass on the tibialis anterior tendon sheath that may be mistaken for a tumor.

People and Age
Patients are in their middle adult years.
Symptoms and Presentation
The mass typically presents after a minor change in the training program or an insignificant injury.
Brief description of the xray
MRI shows a intermediate signal on T1 weighted images and hyperintensity on T2 weighted sequences.
Brief desc of tx
Treatment is by recognition of the origin of the problem, education of the runner, and padding, changing, or repositioning the laces and the tongue of the shoe to minimize the forces on the area.
Tumor Name
runners bump - foot and ankle
Tumor Type
Tumors of the Foot and Ankle
Benign or Malignant
Benign
Body region
ankle and foot, leg
Most Common Bones
tibia
Complete Information on this Tumor
Introduction and Definition

Runners who average more than 30 miles per week occasionally develop a mass on the tibialis anterior tendon sheath that may be mistaken for a tumor. On examination, a soft, mobile lesion surrounds the tibialis anterior tendon at the level where the tendon makes impinges on the shoelaces or the tongue of the shoe. The tendon itself retains normal caliber and function. In some cases the lesion can be partially eliminated by compressive massage, but recurs promptly.

Incidence and Demographics
Patients are in their middle adult years.
Symptoms and Presentation

The mass typically presents after a minor change in the training program or an insignificant injury. The lesion increases in size with running and activities and decreases in size with rest and elevation. Pain is usually mild enough to allow continuation of the running program, which in turn leads to the persistence of the lesion.

X-Ray Appearance and Advanced Imaging Findings
MRI shows a intermediate signal on T1 weighted images and hyperintensity on T2 weighted sequences.
Treatment Options for this Tumor
Treatment is by recognition of the origin of the problem, education of the runner, and padding, changing, or repositioning the laces and the tongue of the shoe to minimize the forces on the area.