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1.  Delayed Diagnosed Stage 1, 2 Distractive Flexion Injury of the Cervical Spine 
Asian Spine Journal  2011;5(1):35-42.
Study Design
Retrospective study.
To examine the clinical and radiologic characteristics of patients with stage 1 and 2 distractive flexion injury according to Allen's classification and who were not diagnosed immediately after injury, and to analyze the outcomes of surgical treatments.
Overview of Literature
For the diagnosis of stage 1 and 2 distractive flexion injury in the lower cervical spine, attention should be paid when performing radiographs as well as when interpreting the radiographs.
The study was conducted on 10 patients (group 1) with stage 1 or 2 distractive flexion injury and who were not diagnosed immediately after injury from January 2003 to January 2009. The control group (group 2), 16 distractive flexion injury patients who were diagnosed immediately were selected. The simple radiographs, the degree of soft tissue swelling and the magnetic resonance imaging findings of the two groups were compared, and the clinical and radiologic results were examined.
The degree of the prevertebral soft tissue swelling of group 1 was lower in group 1, and it was statistically significant (p = 0.046). The fusion was achieved in all cases (100%) in group 1, however, re-displacement as well as the loss of reduction occurred in one case, despite of delayed fusion and good clinical result. In group 2, bone fusion was achieved in 15 cases of 16 cases (94%).
For the diagnosis of stage 1 and 2 distractive flexion injury in the lower cervical spine, it is desirable to perform computed tomography if diagnosis is not clear. Even if the diagnosis is delayed, stage 1 and 2 distractive flexion injury could be readily reduced by traction, and the treatment outcomes are considered to be comparable to those of the patients diagnosed immediately after injury.
PMCID: PMC3047896  PMID: 21386944
Cervical spine; Distractive flexion injury; Unilateral facet fracture-dislocation; Anterior cevical discectomy and fusion; Delayed diagnosis
2.  Comparison of Kyphoplasty and Lordoplasty in the Treatment of Osteoporotic Vertebral Compression Fracture 
Asian Spine Journal  2010;4(2):102-108.
Study Design
A retrospective study.
To compare the level of restoration of the vertebral height, improvement in the wedge and kyphotic angles, and the incidence of complications in osteoporotic compression fracture in patients treated with either kyphoplasty or lordoplasty.
Overview of Literature
Kyphoplasty involves recompression of the vertebral bodies. Recently, a more effective method known as lordoplasty was introduced.
Between 2004 and 2009, patients with osteoporotic thoracolumbar vertebral compression fractures were treated by either kyphoplasty (n = 24) or lordoplasty (n = 12) using polymethylmethacrylate (PMMA) cement, and the results of the two interventions were compared. A visual analogue scale was used to measure the pain status. Preoperative and postoperative radiographs were analyzed to quantify the anterior vertebral height restoration and the wedge and kyphotic alignment correction.
All patients in both groups reported a significant decrease in pain. The anterior heights increased 24.2% and 17.5% after the lordoplasty and kyphoplasty procedures, respectively (p < 0.05). Three months after the procedures, there was a larger decrease in the loss of anterior vertebral height in the kyphoplasty group (12.8%) than in the lordoplasty group (6.3%, p < 0.05). The wedge angles decreased after both procedures. The wedge angle in the lordoplasty group maintained its value after 3 months (p < 0.05). The kyphotic angular correction was 11.4 and 7.0° in the lordoplasty and kyphoplasty groups, respectively (p < 0.05). Both kyphotic deformities worsened to a similar degree of 5° after 3 months.
Lordoplasty is more useful than kyphoplasty in terms of the improved anatomic restoration and postoperative maintenance.
PMCID: PMC2996621  PMID: 21165313
Osteoporotic vertebral compression fracture; Lordoplasty; Vertebroplasty

Results 1-2 (2)