RT Journal Article
SR Electronic
T1 SPECT/CT for Discrimination Between Active and Inactive Os Trigonum in Posterior Ankle Syndrome
JF Journal of Nuclear Medicine Technology
JO J. Nucl. Med. Technol.
FD Society of Nuclear Medicine
SP jnmt.124.269284
DO 10.2967/jnmt.124.269284
A1 Pöhlmann, Michael
A1 Freesmeyer, Martin
A1 Gühne, Falk
YR 2025
UL http://tech.snmjournals.org/content/early/2025/04/01/jnmt.124.269284.abstract
AB [99mTc]-3,3-diphosphono-1,2-propanodicarboxylic acid bone scintigraphy was used to differentiate between posterior impingement syndrome and Haglund syndrome in a 34-y-old man with unclear right-sided ankle pain. The patient had an accessory os trigonum bilaterally, and previous x-ray, MRI, and CT were inconclusive. Using SPECT/CT with new iterative reconstruction algorithms based on CT images, the pathologic activation of bone metabolism at the right-sided os trigonum and the adjacent talus joint was revealed. Other causes of posterior ankle pain were ruled out, and posterior impingement syndrome was diagnosed.