SYMPTOMATIC POST-TRAUMATIC SYRINGOMYELIA: ARE THERE PREDICTIVE FACTORS ?

Purpose: The incidence of postraumatic vertebromedullary syringomyelia is difficult to estimate but the most recent series have reported 28%. The purpose of this retrospective study was to search for risk factors of symptomatic posttraumatic syringomyelia (PTS) and to propose an adapted approach for early management.Material and methods: Forty-six patients consulted for symptomatic PTS 14 years (range 9 months – 45 years) after their trauma. Half of the patients had initially undergone treatment (osteosynthesis in 74% and laminectomy in 70%). Physical signs, the Frankel score, measure of functional independence (MFI) at discovery of PTS were compared with findings early after trauma. Local kyphosis and residual canal stenosis were measured. The location, length, and extension of the syringomyelic cavity, presence of arachnoiditis, and freedom of the subarachnoid spaces were studied on magnetic resonance images. Intra-cystic and perimedullary fluid flow was also quantified.Results: Gender, age, vertebral l...