Scoliosis in a Nineteen Years Old Male: Prevalence Study

OBJECTIVE: To evaluate the prevalence and the epidemiological findings of scoliosis in 19-year-old Korean males. METHODS: We applied chest radiographs for scoliosis screening from the examinations for conscription at Regional Military Manpower Administration in Seoul, Korea, from April 2009 to December 2009. A total 28,779 males, aged 19 years, were screened for scoliosis. Additional thoraco-lumbar radiographs were obtained for every examinee identified with scoliosis of more than 20 degrees using Cobb's angle. RESULTS: The prevalence of scoliosis of more than 10 degrees of Cobb's angle was 5.3%(1532 of 28,779 males). The most common category for these 19-year-old males was scoliosis of 10 to 19 degrees. The most common pattern of scoliosis was thoracic (57.6%), followed by thoracolumbar (32.1%), lumbar (7.0%), and double major curves (3.3%) scoliosis. CONCLUSIONS: Among 28,779 19-year-old Korean males, the prevalence of scoliosis of more than 10 degrees Cobb angle was 5.3%, and thoracic scoliosis was the most common.

The Change of the Mechanoreceptor of Anterior Cruciate Ligament in Fixed Knee and Injured Anterior Cruciate Ligament in the Rabbit / 대한정형외과학회잡지

PURPOSE: To identify the change of mechanoreceptor of anterior cruciate ligament (ACL) in fixed knee and injured ACL. MATERIALS AND METHODS: Eighteen rabbits were divided into three groups as control, fixed knee, and injured ACL groups. Both knee of all fixed knee group were fixed with K-wire on the first day. The ligaments of the injured ACL group were cut at tibial attatchment site on the first day. Two rabbits of each group were sacrificed for the evaluation of mechanoreceptor at the 1st, 3rd, and 5th week. Histologic studies were performed by modified gold-chloride stain for the mechanoreceptors RESULTS: The types of mechanoreceptor in normal ACL were type I, type II, and type III. There was no difference in the appearance rate of each type. In the fixed knee group, the frequency of appearance decreased significantly at 5th week compared with that of the control group. In the injured ACL group, the frequency of appearance decreased at 1st week and showed no difference at 3rd week in comparison with 1st week, and zero at 5th week. In morphology the degree of degradation of mechanoreceptor increased with time in both experimental group, and showed more severe in the injured ACL group than in the fixed knee group. Most of all mechanoreceptors were located in the subsynovial region, and degraded with synovial degeneration and synovial inflammation. CONCLUSION: Mechanoreceptors were changed with the change of intra-articular condition and ligament itself. Therefore the duration of immobilization shoud be shortened if possible and the torn ACL should be repaired anatomically, if indicated, as soon as possible to preserve the mechanoreceptors.

Extension Block by the Posterior Cruciate Ligament Partial Rupture in the Knee: A Case Report

Although it is well known that extension block in the injured knee is usually attributed to a meniscus tear or anterior cruciate ligament rupture, it is vary rare to cause mechanical extension block by the torn posterior cruciate ligament. We report a case of posterior cruciate ligament partial rupture who presented persistent extension block caused by a nodule formation in a 12-year-old boy after knee trauma and was treated with arthroscopic resection of the nodule.