A case of the bilateral idiopathic aseptic necrosis of the femoral head which was treated by a Colonnas arthroplasty and was followed by an Austin Moores prosthesis on the other hip joint satisfactorily is reported with review of literatures. A 44-year-old woman has a long history of steroid therapy for allevation of pain which started in hips for many months and also had an indigestion secondary to chronic hepatic disease. Diagnosis of the idiopathic necrosis of the femoral head was made by the typical roentgenologic findings and the clinical symptoms, and it was confirmed by the operative findings. The choice of treatment in bilateral idiopathic necrosis of the head of the femur is considered to be cup arthroplasty, but circumstances under which cup and instruments are not available certain another surgical procedures should be considered such as other metalic replacement or non-metalic arthroplasty. Here in this case Colonnas arthroplasty without metalic replacement in a hip and the prosthetic replacement in the other joint were thought to be the best procedure. Bilatal Colonnas arthroplasty is not chosen because they develop bilateral abduction deformity of the hips. She was discharged from the hospital with a pair of crutches in good function in her hips without any complication.
Adult ; Arthroplasty ; Congenital Abnormalities ; Crutches ; Diagnosis ; Dyspepsia ; Female ; Femur ; Head ; Hip ; Hip Joint ; Humans ; Joints ; Necrosis ; Prostheses and Implants

The spinal injuries were reported by relatively low incidence than other fracture and dislocation in the body. However, the rate of spine injury tend to increase year by year as the rate of traffic accident and industrial accident have been increased. Authors have experienced 403 cases of various type of injuries from Jan, 1966 to Aug. 1971. They were analysed as follows. 1. Out of 330 patient, males were 212 cases (64.2%) and female 118 (37.8%) Among them 74% of cases were between 20 to 40 years of age. About 51.9% of cases of the spinal injury were caused by traffic road accident. 2. The most most common fracture site in the spinal segments were between 12th thoracic spine and 2nd lumbar spine (69.0%) and most common types of spine injury was simple wedge fracture (70.7%) which is induced by flexion violence. 3. The stable injuries of the spine (69.4% 229 cases) were treated by functional methods such as bed rest, early ambulation. Injured spine were not immobilized in cast. They gave a more functional results than rigidly immobilized group. 4. 27 cases (8.2%) were complicated by paraplegia and mostly (59.3%) were caused by rotational fracture-dislocation. The common site of lesion were between D12-L2 (67.4%) 5. Among the 185 cases who were followed over 6 months, sponetaneous spinal fusion within 6 months after injury occured in 166 cases (89.7%) 76.8% of them were fused within 4 months. 6. Among the 27 paralysed cases, 3 were died within 2 weeks of admission, and 3 cases had complete recovery without residua.
Accidents, Occupational ; Accidents, Traffic ; Bed Rest ; Dislocations ; Early Ambulation ; Female ; Humans ; Incidence ; Male ; Paraplegia ; Spinal Fusion ; Spinal Injuries ; Spine ; Violence

In order to compare the effects of the flexible external fixations with the rigid one on fracture healing, rabbits tibiae were fractured surgically and each fracture were immobilized with external devices using graphites (the group I), plastics (the group II) and stainless steel (the group III). At six weeks after fracture, clinical and radiological union rates in group I, II and III were 91% 73% and 60% respectively. The rabbits tibiae were load in 4-point bending test to determine the mechanical properties of the fracture healing. The means and standard errors of maximum bend moment of the fractured tibiae were 11. 30±2.33kg.f. cm., 8.55±2.02kg.f. cm. and 9.79±2.09kg.f. cm. in group I, II and III respectively. These data may suggest that a certain amount of the flexibility (ex, graphite) or motion is better than the rigidity (ex, stainless steel) in fracture healing by the method of the external immobilization).
Fracture Healing ; Graphite ; Methods ; Plastics ; Pliability ; Rabbits ; Stainless Steel ; Tibia

Multiple myeloma is considered to be the most common primary malignant bone tumor which has the flat bone as a predilection site in old ages. We experienced a case of an unsual multiple myeloma which formed a huge tumor mass on medial end of left clavicle. The tumor mass together with medial half of the clavicle was excised completely. We have discussed the rationale for the excision of the clavicle.
Clavicle ; Multiple Myeloma

It is essential to define the accurate location and extent of bony bridge in relation to the epiphyseal plate for operation of partial epiphyseal plate closure by bony bridge resection. Since magnetic resonance imaging(MRI) provides excellent tissue contrast and multiplaner image, it could be applied to the diagnosis and mapping of bony bridge of epiphyseal plate. A thirteen year old female with post-traumatic epiphyseal injury of ankle was diagnosed by MRI. We could assess the bony bridge accurately by direct sagittal and coronal images and excellent tissue contrast of MRI.
Ankle ; Diagnosis ; Female ; Growth Plate ; Humans ; Magnetic Resonance Imaging

No abstract available.

No abstract available.
Kinetics* ; Wrist*

Reconstructive surgeries for old ligament injuries of the knee vary according to the site and nature of injury as well as the age, health, physical demand and cartilage condition of the patients. No single best procedure is present for any old ligament injuries, but the most adaptable technique should be applied according to accurate diagnosis and experiences of surgeon. We reviewed our experiences of several reconstructive surgeries for the 38 cases with chronic ligamentous instabilities and summarized as following. 1) The most prevalent age of the patients was the third decades and males were 5.3 times more common than females. 2) Traffic accidents was the most common cause. 3) Tear of anterior cruciate ligament and medial collateral ligament appeared to be the most common injury. 4) Results at final follow up was not seemed to be affected by severity or location of ligament injury. 5) Intraarticular reconstruction without combined extraarticular reconstruction was not considered to be effective enough for anterior cruciate ligament deficient knee. 6) Although the number of cases was not large enough, we reviewed various reconstructive surgical techniques for comparison and evaluated the effects.
Accidents, Traffic ; Anterior Cruciate Ligament ; Cartilage ; Collateral Ligaments ; Diagnosis ; Female ; Follow-Up Studies ; Humans ; Knee ; Ligaments ; Male ; Tears

It is essential to define the mechanical and morphological characteristics of bone in undrestanding the mechanism and treatment of fractrues of bone. We already reported the results of bending study in 1983 and tension study in 1987 to assess the mechanical and morphological changes of bone according to the growth. Following these studies, we performed torsion study on growing long bone to have better understanding of the characteristics of bone. In order to assess the mechanical and morphological properties of fracture of growing bone by torsion, we divided 100 Newzealand white rabbits(40 1-month-old rabbits, 20 3-months old rabbits and 40 5-months-old rabbits) into 6 experimental groups according to their maturity and side : Group 1(right femur of 1 month old), Group 2( left femur of 1 month old), Group 3(right femur of 3 months old), Group 4(left femur of 3 months old), Group 5(right femur of 5 months old), Group 6(left femur of 5 months old). Each group of femora were loaded in torsion with varing distance and the following results were obtained: 1. Fracture shapes were composed of the spiral component and the vertical component which connected the two ends of the spiral component. 2. Younger bones revealed greater deformation angle and apex angle but less obliquity than older bones. 3. When the gap between the grips were lengthened three times, there was a very signi ficant increase of deformation angle and obliquity but apex angle was decreased and the fracture angle showed little change. 4. It was necessary to measure the apex angle and obliquity in the morphological description of fractures by torsion. 5. We observed when a certain degree of angular deformity was applied on a bone at a certain age, the fracture was occured through the tension failure regardless of types of loading forces.
Congenital Abnormalities ; Femur ; Hand Strength ; Humans ; Infant, Newborn ; Rabbits

No abstract available.
Abortion, Spontaneous* ; Female ; Humans ; Pregnancy