Prevalence Study of Adolescent Idiopathic Scoliosis in Ten-, Eleven-Year Olds for 10 Years / 대한정형외과학회잡지

PURPOSE: School screening for adolescent idiopathic scoliosis (AIS) was conducted for 10 years and the prevalence of scoliosis as well as the size and types of curvature were investigated. The outcomes and existing research results were comparatively analyzed and the usefulness of the moire topography as a screening tool was evaluated. MATERIALS AND METHODS: Moire topography was used in screening of 413,351 10- and 11-year-old from 2002 to 2011; simple standing entire spine x-rays of selected examinees were taken. When the Cobb angle was 10degrees or higher, the condition was deemed to be scoliosis, and the size, location, and types of curvature were recorded. RESULTS: The average prevalence over the 10 years was 0.4% (0.3%-0.5%) and the trends in yearly prevalence did not change significantly. The ratio of boys-to-girls prevalence rates for the 10 years was 1.0:3.8. The rate of those with scoliosis whose curvature was 10degrees-19degrees, 20degrees-29degrees, and 30degrees-39degrees was 71%, 24%, and 4%, respectively. King-Moe type III accounted for the largest portion at 45%, followed by type IV at 35%, type II at 11%, type I at 7%, and type V at 5%. CONCLUSION: The prevalence of scoliosis in the subjects was similar for the 10 years but differed from previous research results. The size, location, and types of curvature were similar to those reported in previous research. The differences in prevalence from existing research are considered to be due to the screening method used. Therefore, conduction of additional research on effective screening tests is necessary.

Functional Outcomes of Percutaneous K-Wire Fixation for Distal Radius Fractures with or without Osteoporosis

PURPOSE: To determine the influence of osteoporosis on the results of percutaneous K-wire fixation for distal radius fractures. MATERIALS AND METHODS: Between March 2007 and February 2011, Fifty seven patients who underwent fixative surgery with K-wires after closed reduction and those available for follow-up for at least 6 months were reviewed. They were divided into the two groups of T score -3 or more (group 1) and T score less than -3 (group 2). These groups were compared by the range of motion of the wrist and Disabilities of the Arm, Shoulder and Hand (DASH) score. Radiologic evaluations consisting of radial length, radial inclination and volar tilt were compared. In group 1 with 34 cases, the average age was 65.4 years (50 to 78 years) and T score was -1.97 (-0.1 to -2.93). In group 2 with 23 cases, the average age was 74 years (54 to 89 years) and T score was -4.11 (-3.1 to -6.97). RESULTS: There was no statistical difference between group 1 and group 2 in terms of range of motion, DASH score and radiologic evaluations. CONCLUSION: In the case of no volar side cortical comminution, percutaneous K-wire fixation can be applied for the treatment of distal radius fracture with osteoporosis.

Clinical Results Comparing Transtibial Technique and Outside in Technique in Single Bundle Anterior Cruciate Ligament Reconstruction

PURPOSE: To compare the clinical results of single-bundle anterior cruciate ligament (ACL) reconstruction using the conventional transtibial technique and the anatomical outside-in technique for femoral tunneling. MATERIALS AND METHODS: From 2007 to 2011, 89 patients who received ACL reconstruction were followed for > or =1 year were enrolled in the study. The conventional transtibial technique was used in 41 patients and the outside-in technique, in 48 patients. Femoral tunnel angle measurement and three-dimensional computed tomography (3D CT) were used for radiologic assessment of the location of femoral tunnel and Lysholm score and other tests were used for clinical assessment. RESULTS: Both techniques did not reveal statistical differences in the clinical assessment. However, in International Knee Documentation Committee subjective knee evaluation, the sum of two questionnaire items regarding instability showed a statistically significant difference (p=0.01). In the pivot shift test, the anatomical outside-in technique showed outstanding rotational stability over the transtibial technique (p=0.04). The mean femoral tunnel inclination in coronal plane were 69.2degrees and 30.3degrees, respectively, for both techniques, and 21.6degrees and 50.8degrees, respectively in sagittal plane, showing statistically significant differences on simple radiography (p=0.04, 0.05). A 3D CT was performed in 17 patients with the conventional transtibial technique and 25 patients with the outside-in technique. Coefficients of variation were 0.33 and 0.13, respectively, from dorsal border of the condyle and 0.67 and 0.24, respectively, from the roof of intercondylar notch. CONCLUSIONS: Femoral tunnels created with the outside-in technique have superior knee joint rotational stability compare to the transtibial technique. Therefore, the outside-in technique could be considered as a valuable technique in single-bundle ACL reconstruction.