The Radiological Measurement of Proximal Tibia and Fibula in Korean Adults / 대한정형외과학회잡지

The proximal tibial osteotomy is a procedure that usually corrects abnormal tibiofemoral angle in osteoarthritis of the knee. In general, we could corrects tibiofemoral angle in ratio of 1mm wedge significantly by the level of osteostomy and size of tiba in patients. The radiologic measurement of proximal tibia and fibula has not been reported. So we analyzed the knee standing AP and lateral films taaken from the 491 patients during the period from January 1988 to December 1989. The results were as follows. 1. The width of tibial plateau was average 82.24mm. 2. The distance between tibial plateau to fibular head was average 11.41mm. 3. The width of proximal tibia at the level of fibular head was average 78.63mm. 4. The width proximal tibia at distal 5mm, 10mm and 15mm along the lateral margin of tibia from fibular head was average 75.78mm, 72.69mm and 65.10mm each other. 5. The length of second osteotomy line with 10mm wedge thickness from fibular head was average 75.06mm. The length of second osteotomy line with 10mm wedge thickness 5mm below fibular head was average 71.48mm. 6. Authors compared radiologic size of proximal tibia which was checked from 1m distance with true bone size of cadaver and patient, and the ratio was 1.13:1. 7. It was suggested that the radiologic measurment of proximal tibia is advised basic study for development of implant because the conventional implant developed other people was not adapted proximal tibia to Korean.

Experimental Study of Disodium Etidronate for the Growth of MC3T3-E1 Osteoblastic Cell Line / 대한정형외과학회잡지

In the general, Disodium estdronate (EHDP) had effects of inhibition in bone resorption, dissolution of hydroxyapatite crystal and decreasing the turn over rate in Paget's disease. Clinically it is used as the drug of treatment for the osteoporosis, heterotropic ossificatiom and Paget's disease inspite of some, controvesies, but there is few article about the effect of EHDP on osteoblast. Authors tries to observe the effect of EHDP on osteoblast using the MC3T3-El osteoblast cell line which has very similar chrateristics with human osteoblast and evaluate the effect by the criteria of changes of morphology, number of osteoblast, and alkaline phosphatase activity. The results are obtained as following: l. EHDP has direct inhibitory effect on the proliferation of osteoblast. 2. EHDP increase the alkaline phosphatase activity in vitro.

The Changes of the Bone and Joint of Upper Extremities in Young Baseball Players / 대한정형외과학회잡지

We checked and analysed the clinical and radiological status of the upper extremities of 142 baseball player in childhood and adolescence. The results of this study were as follow:1. The oreder of frequency of pain locations in the upper extremities was elbow, shoulder, and then wrist joint. 2. There was colse relationship between elbow pain and career, but not in shoulder and wrist area. 3. The characteristics of shoulder or wrist pain were diffuse and vague nature, but elbow pain was located in medial aspect. 4. The cubitus valgus and limited elbow ROM in throwing side were found in pitchers or older careers. 5. All players showed cortiocotrabecular hypertrophy of humerus, and high incidence of medial epicondylar changes were noticed with career increased. 6. Main bony changes: Shoulder