Freiberg Disease or Freiberg's Infraction
Causes
Freiberg’s Infraction is a type of avascular necrosis seen commonly in the head of the second metatarsal. Avascular necrosis is when there is a reduced blood supply to this area often seen in conjunction with tiny micro fractures to the bone.
The exact mechanism of cause is unknown however it is thought that a combination of vascular compromise, genetic predisposition and altered biomechanics lead to Freiburg’s Infraction.
The condition often occurs during a growth spurt in puberty between the ages of 11-17 and is more commonly seen in females than males at a ratio of 5:1. Having a long 2nd metatarsal also increases your chance of suffering from this condition as more pressure is placed on the head of the 2nd metatarsal.
Symptoms
Constant localised pain usually at the head of the 2nd metatarsal
Increases with weight bearing activity
In dancers work on demi pointe and pointe will exacerbate symptoms
Localised swelling can sometimes be seen
Decrease in the range of motion available at the joint
If your podiatrist suspects Freiberg’s Infraction they will send you for x ray, ultrasound or MRI imaging, to confirm the diagnosis.
Treatment
Offloading the area, usually with a CAM boot or crutches
Immobilisation and or activity reduction for 4-6 weeks
Footwear modifications and padding
Orthotics
Surgery - should conservative treatment not produce success
With sufficient rest and offloading most patients are able to return to their previous activity levels without any further concern.
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