Son had severe ankle sprain, and still has pain. mri shows a pre stress fracture of talus bone with lesion on talus. what is pre stress fracture?

Inflammation.: The bone can be inflammed and may be on the brink of fracturing. You should be seeing an orthopedic foot/ankle specialist.

Difficult to say: The' severe' ankle sprain also resulted in an injury to the talus apparently .The 'lesion' to the talus may be separate from the stress injury to the bone , possibly a small 'chip' or osteochondral injury sustained at the time of the injury.This "pre- stress" injury sounds like a radiologic term for loss of bone density on MRI or a mild contusion.Check w/ your ors concerning signifigance. Gl!

MRI finding...: A pre-stress fracture is where a bone is starting to hurt but does not ever fully manifest on x-ray. Pre stress fracture syndrome requires a shorter duration of treatment.