A retrospective analysis was conducted on ski injury collected in past 12 years, from 1982 to 1995, exception of 1986 and 1987 at the Young Pyeong Ski Resort in Korea. A total of 3,093,667 skiers during the 12 years period are cohort of this investigation. Of 3,093,667 skiers, 7,172 injuries were indexed by anatomic region and severity according to diagnosis on initial evaluation. The frequency of injury changes from 3.4 to 1.5 per 1,000 skier-days during the 12 years. The rate of upper extremity to lower extremity injury increased from 1:1.33 to 1:0.89 during the study period(P<0.005). The most common upper extremity injury pattern was simple injury including laceration and contusion(74.2%). The ulnar collateral ligament injury of thumb make up of 6.5% of all injuries. In conclusion, upper extremity skiing injury was related to 1) Skiers activity level, 2) Skiers skill, 3) Degree of fatigue, 4) Slope condition, 5) Improvement of ski equipment, and 6) Increased skiing population density.
Cohort Studies ; Collateral Ligaments ; Diagnosis ; Fatigue ; Health Resorts ; Korea* ; Lacerations ; Lower Extremity ; Population Density ; Retrospective Studies ; Skiing ; Snow* ; Thumb ; Upper Extremity*

Kuntscher introduced the interlocking nail as the name of Detensionsnagel at 1968. Klemm, Kaessman, Hempel used it clinically through transverse hole. Authors tried to make the sagittal hole at the dorsum of the Kiintscher nail, which was interlocked- from the slot to the hole by bone screw. The direction of the sagittal hole crossed right angle to the transverse hole. Analysis of 35 cases conducted following conclusion. 1. Transfixing the screw at the sagittal hole of the nail can be done easily when transfixing through the transverse hole is difficult. 2. There was no difference in stability between transverse hole and sagittal hole transfixation. Lateral movement of the nail was disappeared after transfixation of the screw at the sagittal hole. Interlocking system is very similar to Harrington distraction rod system. 3. One case of nail breakage had occured at the transverse hole. Nail breakage easily occurs if the hole is situated near the fracture site. For prevent nail breakage larger nail insertion is desirable. (More than 14mm in femur and more than 12mm in tibia.) 5. Indication of the I-M nailing is widened by screw interlocking: from the subtrochanteric fracture to the supracondylar fracture of the femur. It is also useful in arthrodesis of the knee joint. 6. Addition of the Interlocking in ordinary I-M nailing patient could walk 3 to 10 days after operation and radiologic union achieved 12 to 20 week after opeation.
Arthrodesis ; Bone Screws ; Femur ; Humans ; Knee Joint

No abstract available.

No abstract available.
Career Choice* ; Humans

We have made a statistical survey on 2441 amputated limbs of 2150 patients who were treated at the Depart- ment of Orthopedic Surgery and who were prescribed the prosthetics at the Prosthetic Center of Veterans Hospital from Mar. 1972 to Feb. 1982. 1. The peak incidence was in the age group from 21 to 30 years with 1546 cases (63.3%). Of 2150 patients only 9 patients were female. 2. The main causes of amputation were trauma with 1901 cases (77.9%), vascular insufficiency with 326 cases (13.4%) and chronic osteomyelitis with 157 cases (6.4%). And the most fre#quent cause of traumatic amputation was explosive injury with 1080 cases (56.8%). 3. Of the 2441 amputated limbs, 1756 cases (71.91°) were at the lower extremity and the most frequent site was below the knee with 1000 cases (57%). 4. Minor limb amputation was performed on 326 cases (13.4%). 5. Multiple limb amputation was performed on 255 patients (11.9%) and of these 12 patients were amputated on 4 extremities. 6. Reoperation was performed on 420 cases (17.2%). It was most prevalent in the lower extremity with 365 cases (86.9%) and their main cause was neuroma with 171 cases (40.7%). The most frequent site was below the knee with 240 cases (57.2%).
Amputation ; Amputation, Traumatic ; Amputees ; Extremities ; Female ; Hospitals, Veterans ; Humans ; Incidence ; Knee ; Lower Extremity ; Neuroma ; Orthopedics ; Osteomyelitis ; Reoperation

A case of Coats' disease, apparently as the first report in Korea, is presented. The patient was 17 years old Korean female and hospitalized Woo-Suk University hospital on May 23, 1969. Although cyclodialysis had been performed to the patient her intraocular pressure remained as the same as before the treatment, and thus enucleation Was done finally.
Adolescent ; Female ; Humans ; Intraocular Pressure ; Korea

No abstract available.
Hypopharyngeal Neoplasms*

We retrospectively studied 53 cases of thymic tumors diagnosed after thymectomy to clearfied the pathologic difference of thymic tumor associated with myasthenia gravis and without myasthenia gravis. Among them, there are 23 cases with myasthenia gravis; 19 among 36 thymomas(52.8%), 3 of 4 thymolipoma (75%) and 1 squamous cell carcinoma. Lymphoma and teratoma are not associated with myasthenia gravis. There is no significant difference in the prevalence of myasthenia gravis between types of the old traditional classification of thymoma. But according to the new Muller-Hermelink classification, about two-thirds of myasthenia gravis have the thymoma with cortical cell origin. The prevalence of myasthenia gavis were relatively low in the patients with thymoma of medullary or mixed type. The frequent association of myasthenia gravis was suggesting that the thymolipoma might be a variant of thymoma, cortical type.
Carcinoma, Squamous Cell ; Classification ; Humans ; Lymphoma ; Myasthenia Gravis* ; Prevalence ; Retrospective Studies ; Teratoma ; Thymectomy ; Thymoma ; Thymus Gland* ; Thymus Neoplasms

No abstract available.

No abstract available.