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Articles by C. W Kim
Total Records ( 2 ) for C. W Kim
  S. J Lee , C. W Kim , K. J Lee , J. W Choe , S. E Kim , J. H Oh and Y. S. Park

S100B is a biomarker that reflects injury to the central nervous system. As the spine is an integral part of the spinal cord, a study was undertaken to investigate whether serum S100B levels are associated with acute spinal fracture without head injury.


The study population consisted of 32 consecutive patients aged ≥18 years in whom the emergency physicians suspected spinal fractures. All the patients underwent CT scans to establish the diagnosis of spinal fracture. MRI was then performed on all the patients to determine the presence of spinal cord injury.


Serum S100B levels were higher in the spinal fracture group than in the non-spinal fracture group, and 19 of the 20 patients in the spinal fracture group (95%) had an S100B level >0.12 µg/l, whereas all 12 of the non-spinal fracture group had an S100B level ≤0.12 µg/l. The S100B level in patients with epidural encroachment of the spinal cord was significantly higher (0.22–4.58 µg/l; mean 2.45 µg/l; 95% CI 0.95 to 3.94) than in those without epidural encroachment (0.114–2.87 µg/l; mean 0.80 µg/l; 95% CI 0.24 to 1.37) (p=0.037). Plain radiography revealed no definite abnormal findings in half of the patients with spinal fracture.


Serum S100B levels are raised in all patients with acute spinal fracture without head injury. Spinal fracture may therefore be one of the extracerebral sources of S100B. Serum S100B levels may be an effective tool for excluding subtle spinal fractures with no clear radiographic findings.

  J. H Wang , J. H Bae , H. C Lim , W. Y Shon , C. W Kim and J. W. Cho

High tibial osteotomy can affect the posterior tibial slope in the sagittal plane because of the triangular configuration of the proximal tibia. However, the effect of the location of cortical hinge on posterior tibial slope has not been previously described.


Posterolateral location of the cortical hinge will increase posterior tibial slope after medial open wedge osteotomy, and lateral location of the cortical hinge will not affect the change of the posterior tibial slope.

Study Design

Controlled laboratory study.


We performed incomplete valgus open wedge osteotomy on 12 paired knees of 6 fresh-frozen human cadavers (age, 63.4 ± 7.5 years) using an OrthoPilot navigation system. The left and right legs of each specimen were randomly assigned to a posterolateral (group A) or a lateral (group B) cortical hinge group. Changes in mean medial proximal tibial angle, posterior tibial slope, and opening wedge angle were measured and compared after surgery.


In group A, mean medial proximal tibial angle changed from 84.37° ± 2.8° to 93.48° ± 3.06° (P = .028); mean posterior tibial slope increased significantly from 8.71° ± 0.81° to 12.16° ± 0.84° (P = .031); and mean wedge angle was 1.92° ± 0.46°. In group B, mean medial proximal tibial angle changed from 82.98° ± 2.53° to 90.89° ± 3.25° (P = .027); mean posterior tibial slope changed from 9.19° ± 1.11° to 9.78° ± 1.27° (P = .029); and mean wedge angle was 7.25° ± 0.72°.


The location of the intact cortical hinge affects the posterior tibia slope. During medial open wedge osteotomy, the change of posterior tibial slope was larger in the posterolateral than in the lateral cortical hinge group.

Clinical Relevance

To prevent the unintentional increase of the posterior tibial slope, special attention should be paid to locate the intact cortical hinge on the lateral, not the posterolateral, side of the tibia.

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