In Vitro Effects of Ascorbic Acid on the Repair Process of the Fetal Rat Femur Damaged by Cyclophosphamide / 대한정형외과학회잡지

After bone damage of the fetal rat femurs induced by administrating cyclophosphamide(CP),(1/8 LD50) to the pregnant rat on 13th day of gestation, the effects of serum and ascorbic acid on the repair process of the bone during organ culture were studied, histologically and scanning electron microscopically. CP-damaged fetal femurs harvested at 20 days of gestation were cultured fro 2, 5 and 7 days in the waymouth media(WM) with or without fetal bovine serum(FBS) and ascorbic acid, and were observed with light microscope and JSM-35C scanning electron microscope. The results were as follows:1. CP-damaged bone tissue cultured in WM with 10% FBS showed relatively enhanced activities in the differentiation of chondrocytes and ossificstion as compared to that cultured in WM. 2. CP-damaged bone tissue cultured in WM with 10% FBS and 100µg/ml ascorbic acid, showed increase in the length of the bone marrow cavity, and active formation of new osteoid and collagen bundles. 3. The bone tissues cultured in WM with 10% FBS and 400µg/ml ascorbic acid revealed active deposition of bone matrix, thickening of periosteum and marked elongation of the bone marrow cavity. 4. Bone trabeculae of CP-damaged femurs cultured for 2 days in WM showed poor cell proliferation and insignificant bone matix formation. 5. The number of new cells and the amount of the collagen fibrils increased on the bone trabeculae of the bone cultured in WM with 10% FBS as compared to that cultured in WM and this increase was enhanced as the culture time progressed. 6. A remarkable increase was noted in the number of cells and collagen fibrils in the bone tissues cultured in WM with 10% FBS and ascorbic acid than in those cultured in WM with 10% FBS. 7. The number of the spherules formed by cellular component with collagen fibrils is more numerous than that formed by calcospherites associated with collagen fibrils.

A Clinical Observation of Girdlestone Operation / 대한정형외과학회잡지

We clinically reviewed and analysed 19 patients treated as Girdlestone operation with or without Batchelor osteotomy at the Department of Orthopedic Surgery, Busan National University Hospital from April 1979 to June 1981. The results were as follows: 1. The underlying disease were infected pinning and nailing of 8 cases, pyogenic hip of 4 cases, failed total hip arthroplasty of 4 cases, tuberculous hip of 2 cases and femur neck fracture of 1 case. 2. Satisfactory results were obtained in 7 or 8 cases treated as secondary Girdlestone operation over 50 years of age. 3. Postoperative shortening ogleg length was 3.2cm in average (from 1.7cm to 5.0cm), which was average 2.5cm at 12 weeks traction and average 3.7cm at 6 weeks traction. 4. Postoperative average range of motion was; flexion to 80 degrees and abduction to 30 degrees. There was statistical significancy in activity of daily living of hip function at 12 weeks traction in postoperative score. 5. 6 cases out of 11 cases without pain in postoperative condition showed severe bony contacts and ir- regularities of proximal portion of the operated femur radiologically.