Osteosarcoma probably arises from a primitive, undifferentiated mesenchyme, It is highly malignant bone tumor characterized by the invariable formation of neoplastic osteoid and tumor tissue with poor prognosis. Osteosarcoma may involve any bone, but usually arises in the metaphyseal portion of long bones, most frequently at the distal ent of the femur, the proximal end of the tibia, and the proximal end of the humerus. The authors have experienced one case (52 year old male) of osteosarcoma originating from the right patella.
Femur ; Humerus ; Mesoderm ; Osteosarcoma ; Patella ; Prognosis ; Tibia

Osteochondroma is the most common benign tumor of bone, of which the typical form is a cartilagecapped bony projection, far often found at the metaphysis of the long tubular bones, and may arise from any bone performed in cartilage. To our knowledge, however, osteochondroma of lumbar spine has been reported 11 cases, but We experienced a case of osteochondroma located in the position normally occupied by right side lamina of 5th lumbar vertebra. The mass was excised and disclosed typical microscopic findings of osteochondroma.
Cartilage ; Osteochondroma ; Spine

The authors performed a retrospective matched-pair study for 54 uncemented total hip arthroplasties which were performed in management of avascular necrosis of femoral head from July, 1989 to May, 1991 to investigate what kind of stem is better between Anatomic stem as a proximal filling stem and Harris-Galante stem as a distal filling stem. The results were as followings: 1. Clinical results of Anatomic group were slightly better than those of Harris-Galante group in terms of incidence of thigh pain, groin or buttock pain and final functional score of hip. 2. Incidence of radiolucency around femoral stem in Harris-Galante group was higher than that in Anatomic group, especially in zone I, V of anteroposterior view and in zone IV of lateral view, which were statistically significant(p < 0.05). 3. The incidence of vertical subsidence of femoral stem in Harris-Galante group was significantly higher than that in Anatomic group(p < 0.05) and the average distance of subsidence was 3.2mm. 4. The incidence of endosteal osteolysis and bone resorption in Harris-Galante group was higher than that in Anatomic group. 5. In overall view, clinical and radiographic results of Anatomic group were better than those of Harris-Galante group.
Arthroplasty ; Arthroplasty, Replacement, Hip ; Bone Resorption ; Buttocks ; Groin ; Head ; Hip ; Incidence ; Necrosis ; Osteolysis ; Retrospective Studies ; Thigh

No abstract available.
Muscular Dystrophy, Facioscapulohumeral*

No abstract available.
Tibial Fractures*

No abstract available.

The application of the arthroscope to the shoulder joint has evolved in recent years for the purpose of diagnosis and treatment. This paper presented 11 cases with various shoulder diseases treated by arthroscopy during the period from January, 1984 to September, 1985 in the Department of Orthopedic Surgery, College of Medicine, Soon Chun Hyang University. The advantages of the arthroscopy were as follows: 1. The arthroscopy made it easier to diagnose the unsolved cases by direct biopsy on the pathologic lesions in the joint. 2. The damage on the inside and outside of the shoulder joint was minimal and the post-operative incision scar was acceptable cosmetically. 3. The limitation of the joint motion did not remain due to early exercise post-operatively. 4. The complications such as infection, neurovascular injury, scuffing of joint cartilage, etc. could be avoided.
Arthroscopes ; Arthroscopy ; Biopsy ; Cartilage ; Cicatrix ; Diagnosis ; Joints ; Orthopedics ; Shoulder Joint ; Shoulder

OBJECTIVES: This study was performed to investigate the effectiveness of the questionnaire. METHODS: Workers'health examination records, work environment record, and questionnaires of selected industries as samples were analysed using logistic regression analysis and discrimination analysis Results'Cases of bearing impairment (Dl+C) as dependent variables, and age, work duration and level of environmental noise as independent variables were selected for multiple unconditional logistic regression analysis. Odds ratio was 4.04 in hearing difficulty, 2.78 in tlnnitus and 1.08 in age. In the second analysis Noise induced hearing loss is selected as dependent variable. The OR in hearing difficulty was 3.67(95 % C.1. : 1.61 8.61), and was 1.09(95 % C.1. : 1.05-1.14) in age. Conditionnal multlple logistic regression analysis was performed. In hearing impairment as dependent variable, the OR of age was 1.02(95 % C.1. : 1.00-1.04) and other variables were not significant. However, NIHL as dependent, the OR of hearing difficulty was 4.57(95 % C.1. : 1.43-14.67). According to multiple logistic regression adopting each items of questionnaire as dependent variable, the only item of hearing difficulty showed significant difference with hearing ability. The discrimination analysis was performed with the class variable of hearing impairment, and discrimination variables of age, work duration, and environment noise level. The sensitivity of 59 %, and specificity of 88 %, and average error count of 23 % were obtained. When the numbers of items answered in questionnaire were assumed as the parameter of judgement for noise induced hearing loss (NIHL), the highest sensitivity and specificity were 33.5% and 49.0% in cases of more than two items answered. CONCLUSIONS: The development of items that is simple and discriminative mainly consisted of chronic and specific diseases related items is needed. Computerization for newly developed items might be needed to establish effective surveillance system for NIHL in the future.
Discrimination (Psychology) ; Hearing Loss* ; Hearing* ; Logistic Models ; Mass Screening* ; Noise* ; Odds Ratio ; Questionnaires* ; Sensitivity and Specificity

Thirty-seven patient who had forearm bone fracture were treated by four different methods at the Department of Orthopedic Surgery, Soonchunhyang University Hospital from Jan. 1979 to March 1982. The obtained results are as follow; 1. Nineteen cases out of 37 cases of the forearm bone fracture were both forearm bones, 10 cases were ulna and 8 were radius fracture. 2. Twenty-three cases out of 37 were closed and 13 cases were open fracture, respectably. 3. The applied treatment were manual reduction with cast immobilization, intramedullary naliing, plate and screw fixation and combined. 4. Mean duration of primary bone union of the forerm bone fracture which were treated by plate and screw was 12. 4 weeks, combined fixation was 12.8 weeks, intramedullary nailing was 15.3 weeks and that of manual reduction and cast was 16 weeks in order. 5. Functional result was classified according to the rating system of Smith and Sage. The best method was plate and screw and the worst was manual reduction and cast immobilization. 6. D.C.P. fixation seems to be one of the best method in this series. Combined method, in a way of D.C.P. for radius and I–M nailing for ulna, is a method when shortening of operation time is inevitable.
Adult ; Forearm ; Fracture Fixation, Intramedullary ; Fractures, Bone ; Fractures, Open ; Humans ; Immobilization ; Methods ; Orthopedics ; Radius ; Radius Fractures ; Ulna

Rigid posterior fixation of the atlas to the third and fourth cervical spine was achieved in a patient in whom axis pedicle fracture and dislocation of axis on the third cervical spine. Althouth there was no evidence of neurologic disorder, marked instability of axis on the third cervical spine should inevitably be fused in any procedures. An anatomically contoured loop was secured to the posterior arch of the atlas and the laminae of the third and the fourth cervical spine by sublaminar wirings. The technique has the advantage over bone graft, either alone or with cement, in that it affords rigid stabilization, allows early mobilization and some flexion movement of atlanto-occipital joint.
Atlanto-Occipital Joint ; Dislocations ; Early Ambulation ; Humans ; Nervous System Diseases ; Spine ; Spondylolisthesis ; Transplants