Andersson Lesion-Complicating Ankylosing Spondylitis
Ankylosing spondylitis (AS) is a chronic inflammatory disease which, for the most part, negatively impacts the spine and sacroiliac joints and causes pain and stiffness and kyphotic deformity [1–4]. When the disease develops into the late phase, osteoporotic changes can make the spine fragile and vulnerable to trauma [5, 6]. A minor trauma could induce Andersson lesion (AL), which is a transvertebral, discovertebral or transdiscal fracture of an ankylosed spine. As a result of Andersson lesion, the localized progressive painful kyphotic deformity can lead to severe disturbances of posture and neurologic abnormalities . Andersson lesion was first proposed by Andersson in 1937 . The exact incidence of this disorder was reported in the literature to be between 1.5% and 28% .
- 8.Andersson O. Röntgenbilden vid spondylarthritis ankylopoetica. Nord Med Tidskr. 1937;14:2000–2.Google Scholar
- 16.Chan FL, Ho EK, Fang D, Hsu LC, Leong JC, Ngan H. Spinal pseudarthrosis in ankylosing spondylitis. Acta Radiol (Stockholm: Sweden). 1987;1987(28):383–8.Google Scholar