title: Early Bone Marrow Edema Pattern of the Osteoporotic Vertebral Compression Fracture : Can Be Predictor of Vertebral Deformity Types and Prognosis?
abstract: OBJECTIVE
  To evaluate whether an early bone marrow edema pattern predicts vertebral deformity types and prognosis in osteoporotic vertebral compression fracture (OVCF).
  
  
  METHODS
  This retrospective study enrolled 64 patients with 75 acute OVCFs who underwent early MRI and followed up MRI. On early MRI, the low SI pattern of OVCF on T1WI were assessed and classified into 3 types (diffuse, globular or patchy, band-like). On followed up MRI, the vertebral deformity types (anterior wedge, biconcave, crush), degree of vertebral body height loss, incidence of vertebral osteonecrosis and spinal stenosis were assessed for each vertebral fracture types.
  
  
  RESULTS
  According to the early bone marrow edema pattern on T1WI, 26 vertebrae were type 1, 14 vertebrae were type 2 and 35 vertebrae were type 3. On followed up MRI, the crush-type vertebral deformity was most frequent among the type 1 OVCFs, the biconcave-type vertebral deformity was most frequent among the type 2 OVCFs and the anterior wedge-type vertebral deformity was most frequent among the type 3 OVCFs (p<0.001). In addition, type 1 early bone marrow edema pattern of OVCF on T1WI were associated with higher incidence of severe degree vertebral body height loss, vertebral osteonecrosis and spinal stenosis on the follow up MRI.
  
  
  CONCLUSIONS
  Early bone marrow edema pattern of OVCF on T1WI, significant correlated with vertebral deformity types on the follow up MRI. The severe degree of vertebral height loss, vertebral osteonecrosis, and spinal stenosis were more frequent in patients with diffuse low SI pattern.
authors.affiliation: Department of Radiology, Graduate School, Kyung Hee University, Seoul, Korea.; Department of Radiology, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: Sung Eun
authors.initials: SE
authors.lastname: Ahn
authors.affiliation: Department of Radiology, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: Kyung Nam
authors.initials: KN
authors.lastname: Ryu
authors.affiliation: Department of Radiology, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: Ji Seon
authors.initials: JS
authors.lastname: Park
authors.affiliation: Department of Radiology, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: Wook
authors.initials: W
authors.lastname: Jin
authors.affiliation: Department of Radiology, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: So Young
authors.initials: SY
authors.lastname: Park
authors.affiliation: Department of Neurosurgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: Sung Bum
authors.initials: SB
authors.lastname: Kim
keywords: Bone marrow edema; MRI; Osteoporosis; Vertebral compression fracture