Ankylosing
Spondylitis
« Pseudo-spondylodiskitis »
Chondral
plates + Nucleus
=
fibro-chondral
joint
2 keys for the diagnosis:
• Multiple Locations of different ages
« Séquence Edema – Erosion – Construction -
Ankylosis »
• No intra-discal or
paravertebral abcess
(except SAPHO)
T2 fat sat