An experimental study on the effect of the induced avascular necrosis of the femoral head on the femoral anteversion was made in the hips of 74 three to four-week-old rabbits. The results were as follows; l. In 18 of the 74 operated rabbits, a relative increase of anteversion was observed on the operated side, as compared with the nonoperated femur, the differences ranging from 10 to 75°(average increase was 25.9°). 2. Anteversion increase was actually internal rotation of femoral shaft starting from the subtrochanteric level and progressively increasing downward with spiral fashion. 3. The cause of anteversion increase was not proved in this experiment, but anteversion increase was a result of avascular necrosis.
Femur ; Head ; Hip ; Necrosis ; Rabbits

The congenital dislocation. of the hip is a common congenital disease in the orthopedic field. It is well known that the early diagnosis and effective treatment is very important for the patient to provide a favorable function in the whole life. The Pavlik harness made an important contribution to the treatment of children before standing age. The authors report a clinical experience of 34 patients(35 hips) with congenital dislocation of hip who were treated with Pavlik harness at the Department of Orthopedic Surgery of Chonnam University Hospital. There were total 230 patients(237 hips) diagnosed as congenital dislocation of hip for 10 years from 1978 to 1987. Fifty-one patients(52 hips) of them were treated with Pavlik harness. Only 34 patients(35 hips) were included in this study excluding 17 patients(17 hips) because of inappropriate records or follow-up. The follow-up period ranged from 1 year to 6 years with an average of 2 years and 5 months. The results are as follows ; 1. The most patients were girls, comprising 33 girls and 1 boy. 2. The age of children was 124.6days in average ranging from 13 to 201 days. 3. Of the 35 hips treated with Pavlik harness, satisfactory reduction was obtsined in 30 hips(85.7%). For 5 failed cases, the authors performed closed reduction under the general anesthesia in 3 cases and open reduction in 2 cases. 4. The causes of reduction failure were impossible reduction in 3 cases, nonconcentric reduction in 1 case and repeated redislocation in 1 case. 5. The acetabular and metaphyseal-edge angle improved from the average 33 and 5.8 degrees at the first visit to the average 19.9 and 30.6 degree at the final follow-up (20.7 and 29.2 degrees in normal side). 6. When compared with the value of the 30 hips which were reduced successfully, the initial acetabular angle of 5 failed cases was similar but the metaphyseal-edge angle of them was very low. 7. There was no reduction failure in 27 hips which had metaphyseal-edge angle above 10 degrees. But 5 reduction failures were observed in 8 hips with below −11 degrees. 8. An avascular necrosis was observed in only one patient. In conclusion, the Pavlik harness proved to be a successful means in treating patients with congenital dislocation of hip under 7 months of age with particularly above −10 degrees in metaphyseal-edge angle.
Acetabulum ; Anesthesia, General ; Child ; Dislocations ; Early Diagnosis ; Female ; Follow-Up Studies ; Hip ; Humans ; Jeollanam-do ; Male ; Necrosis ; Orthopedics

The authors report a clinical experience of 95 patients (98 hips) with congenital dislocation of hip under the age of 2 years who were followed up at least 1 year at Chonnam University Hospital between 1979 and 1988. The result of clinical analysis are as follows; 1. The most patients were girls, comprising 87 girls (89 hips) and 8 boys (9 hips). 2. The age at treatment were under the age of 6 months in 49 hips, 7 to 12 months in 5, 13 to 18 months in 30 and 19 to 24 months in 14. 3. The initial treatment of the 98 hips were Pavlik harness in 49 hips, closed reduction in 18, and open reduction in 31. 4. Pavlik harness was applied to the patients under the age of 7 months and the results were acceptable in 37 hips (76%), uncertain in 4 (8%) and unacceptable in 8 (16%). The 8 unacceptable hips were retreated by closed reduction in 6 hips and open reduction in 2. 5. Closed reduction was applied to the patients ranging from the age of 4 months to 21 months and the results were acceptable in 14 hips(78%), unacceptable in 4 (22%). The 4 unacceptable hips were retreated by open reduction in 3 hips and Salter innominate osteotomy in l. 6. Open reduction was applied to the patients ranging from the age of 7 months to 20 months, and the results were acceptable in 26 hips (84%), uncertain in 3 (10%) and unacceptable in 2 (6%). The one of 2 unacceptable hips was retreated by Salter innominate osteotomy. 7. The overall results of 98 hips following initial treatment were acceptable in 77 hips (79%), uncertain in 7 (7%), and unacceptable in 14 (14%). The final results after secondary treatment were acceptable in 89 hips (91%), uncertain in 7 (7%), and unacceptable in 2 (2%).
Child ; Dislocations ; Female ; Hip ; Humans ; Jeollanam-do ; Osteotomy

No abstract available.
Head* ; Ossification, Heterotopic*

Defect of the radius should be managed with either fusion of radius and ulna forming “one-bone forearm”, or restoration of its continuity by bone graft. Reported hereia are two cases in which the radius developed defect following sequestrectomy and treatment of open infected fructure respectively. Reconstruction of the radius was tried with bone graft; utilizing the ulnar end resected from the same side in one case and fibula in other. Both Sowed sound bony union of the graft about four months postoperatively.
Fibula ; Radius ; Transplants ; Ulna

No abstract available.
Orthognathic Surgery

No abstract available.
Humans

The closed reduction has made an important contribution to the treatment of children under the age of 24 months. The authors report a clinical experience of 20 patients(21 hips) with congenital dislocation of hip who were treated by closed reduction at the department of Orthopaedic Surgery of Chonnam University Hospital. There were total 230 patients(237 hips) disgnosed as having congenital dislocated hip for 10 years from 1978 to 1987 and 20 patients of them were included in this study. The follow-up period ranged from 1 year to 10 years with an average 3 years. The results are as follows: l. All but one were girls, comprising 19 (20 hips) of 20 patients. 2. The age at closed reduction were under 6 months in 2, 7 to 12 months in 4, 13 to 18 months in 10 and 19 to 24 months in 4. 3. Of the 21 hips treated by closed reduction, 17 hips achieved a satisfactory result(81%). The other four hips had redislocation(2 hips) and subluxation(2 hips). 4. Four additional treatments were open reduction in 3 and Salter innominate osteotomy in l. 5. The acetabular and center-edge angle improved from the averge 36.1 and
Acetabulum ; Child ; Dislocations ; Female ; Follow-Up Studies ; Hip ; Humans ; Jeollanam-do ; Joints ; Methods ; Necrosis ; Osteotomy

Generally the clinical results of Legg-Calvé-Perthes disease were evaluated until the time of disease healing. However, it is well known that the deformities of the proximal femur progress to the period of skeletal maturity. The purpose of this study was to evaluate the progression of the deformities in the proximal femur. In a retrospective study of 60 patients with Legg-Calvé-Perthes disease, who visited Chonnam National University Hosipital 1974 and 1995 and who were followed until the skeletal maturity, the bony changes of the proximal femur were compared between disease healing stage and skeletal maturity. The results were as follow; 1. More bony deformities were identified in skeletal maturity than in disease healing. 2. The quotient of inferior border of medial femoral neck decreased from 60% in disease healing to 45% in skeletal maturity (P < 0.001). 3. The femoral shortening increased from 4.9mm in disease healing to 10mm in skeletal maturity (P < 0.001). 4. The femoral neck-shaft angle decreased from 128 degrees in disease healing to 125 degrees in skeletal maturity (P < 0.001). 5. The proximal migration of greater trochanter increased from 13.8mm in disease healing to 21.3mm in skeletal maturity (P < 0.001). 6. There were no significant statistical differences in clinical results between operative and conservative treatment groups. 7. The spherical quotient of femoral head and Stulberg rate revealed no differences between disease healing and skeletal maturity. These results revealed that there were considerable differences of the deformities in the proximal femur at the time of disease healing and skeletal maturity.
Congenital Abnormalities ; Femur Neck ; Femur ; Head ; Humans ; Jeollanam-do ; Legg-Calve-Perthes Disease ; Retrospective Studies

The management of distal femur fractures are difficult because of many complications including nonunion, delayed union, infection, loss of fixation, joint stiffness and angular deformity. Until 1960s, conservative management was considered superior to operative treatment in distal femur fracture. But, with advancement of new fixation devices and techniques, open reduction and internal fixation is recent trend. For the purpose of analyzing the factors effecting the results, we studied the 36 cases of distal femur fracture treated surgically from may, 1991 to May, 1994. By AO classification nineteen cases were type C fracture and seventeen cases were type A. According to Schatzker and Lambert criteria, excellent results were in 10 cases, good in 16, fair in 6 and fail in 4. We have analysed the results by fixation device, age, osteoporosis degree, fracture classification, open or closed fracture, operative approach in type C fracture and bone graft. Fair and fail results were more common in the cases of severe osteoporotic bone, type C with lateral approach and open fracture. Excellent and good results were more common in the cases of using the anatomical plate and dynamic condylar screw. We concluded that treatment device should be decided by fracture type, degree of communication, degree of osteoporosis and soft tissue state, and then satisfactory results will be obtained by accurate anatomical reduction, rigid internal fixation and early exercise.
Classification ; Congenital Abnormalities ; Femur ; Fractures, Closed ; Fractures, Open ; Joints ; Osteoporosis ; Transplants