Osteoarthriris post ankle fusion: SPECT-CT imaging

Case contributed by Dr Chris O'Donnell

Presentation

Ankle pain post fusion

Patient Data

Age: 70
Gender: Male

Apparently successful metallic fusion of ankle joint with obliteration of joint space

Nuclear medicine

Planar bone scan shows increased blood flow and 2 sites of abnormal iostope accumulation around the ankle but difficult to localize.   SPECT - CT shows that these 2 sites correspond to the anterior talus and posterior subtalar region (not to the ankle joint)

Review of the CT data indicates that the anterior talar hot spot is a well-defined degenerative cyst in the head and the posterior subtalar hot spot represents osteoarthritic change.  An injection of local anaesthetic into the posterior subtalar joint will confirm it as the pain source.

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Case information

rID: 17230
Case created: 28th Mar 2012
Last edited: 7th Oct 2015
Inclusion in quiz mode: Included

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