A Study of Trauma to the Epiphyseal Plate in Immature Rabbits / 대한정형외과학회잡지

The important role of the epiphyseal cartilage in the longitudial growth of long bones is universally accepted. Injury to the epiphyseal plate caused by surgically produced defects or trauma has been observed clinically and in experimental investigations. These growth retarding effect of defects seem to be proportional to the size of the defect, and are caused by the formation of a bone bridge connecting the epiphysis to the metaphysis. This investigation provides an explanation for the intimate relationship between the size of the defect and growth retarding effect. Central destruction of the distal femoral epiphyseal plates on 81 immature rabbits were performed by four different sized drills. Free flaps of vastus lateralis were inserted into the defect of the epiphyseal plate. Left limbs were used as the experimental group, and right limbs as the control. After 8 weeks of operation, animals were sacrificed, and roentgenological and histological observations were made. The results were observed as follows. 1. The amount of bony bridge connecting epiphysis and metaphysis was proportional to the size of the epiphyseal defect. 2. The amount of growth retardation at the distal femoral epiphyseal plate was proportional to the size of the defect produced in the epiphyseal plate. 3. Compensatory overgrowth at the proximal femoral epiphysis seems to be proportional to the size of the defect made in the epiphyseal plate. 4. Insertion of the free flap of vastus laterials into the epiphyseal defect diminished the formation of the bony bridge.

Double Contrast Arthrographic Findings of Meniscus Tear / 대한정형외과학회잡지

It is well known that double contrast arthrography of the knee is a safe and technically simple procedure permitting accurate diagnosis of lesion of meniscus, especially tears. It has been utilized infrequently until recent years in our country. During the period of Oct. 1977 through Nov. 1978, double contrast arthrography of the knee had been performed in total of 52 cases with soft tissue injury of the knee and a total of 32 cases among them underwent the operation at the Armed Forces Taegu General Hospital. The arthrographic findings of the meniscus injury were presented and analyzed. The results were as follows: 1. Arthrography of the knee is a valuable diagnostic aid for meniscus injury. The diagnostic accuracy was 87.5 per cent for 32 cases. 2. In one case, tear of both menisci unsuspected on the basis of clinical examination were demonstrated one the arthrogram. 3. Arthrography revealed residual portion of the meniscus left after previous menisectomy in one patient. Reoperation resulted in cure. 4. Unnecessary surgery was reduced. 5. There were no complications of arthrography in thts series.

Triple Osteotomy of the Innominate Bone: Experlence with an adult Paralytie Hip / 대한정형외과학회잡지

In the treatment of dislocations and subluxations of the hip in the older children, whether congenital or paralytic, orthopedic surgeons are blessed with a wide variety of commonly used surgical procedures; namely, Salters innominate osteotomy, acetabtloplasties, Pembertons pericapsular osteotomy, shelf operations, Chiaris pelvic displacement osteotomy. and Colonnas capsular arthroplasty. However, with increasing age and soft tissue contractures,these procedures become ineffective, leaving a wide range of age between older children and young adults subject to uncertain or unfavarable prognosis. Steels triple osteotomy (1973) is aimed at coverig this age group, when displacement or in nominate osteotomy is either technically infeasible or likely to fail. It consists of an open reduction with or without soft tissue release and skeletal traction, redirection of the acetabulum to cover the femoral head by osteotonmies of the pelvis that has lost its young cartilagenous resiliency, and preservation and physiological remodelling of the articular cartilage of the acetabulum. We performed Steels osteotomy on a 21-years-old female with a severe paralytic subluxation of the hip associated with pelvic obliquity and paralytized both lower extremities. One and a half year follow-up result was satisfactory with a stable and congruous joint despite paralysis and with the patient walking for the first time in her life.

Discoid Semilunar Cartilage / 대한정형외과학회잡지

Discoid semilunar cartilage is an abnormality in which the meniscus is discoid rather than semilunar, and first reported by Young of Glasgow in 1889. 13 cases of discoid semilunar cartilages which were experienced at the Department of Orthopedic Surgery, College of medicine, Seoul National University from Jan. 1956 till Aug. 1972 are reported with review of literature. 1) The incidence was remarkable higher in the male than in the female as 11 versus 2, and higher in the age group of second decade (Average 16.4 year old). 2) Most common site was lateral meniscus, and bilateral discoid meniscus were 3 cases. 3) 3 cases out of 13 cases had complicated rupture of semilunar cartilage, and one case had cyst of the meniscus. 4) Meniscectomy were performed in all cases with successful outcome.