Synovial Hemangioma of the Knee: A Case Report

A hemangioma in the knee joint of a 13-year-old girl was diagnosed by magnetic resonance imaging. There was pain and a tender localized swelling around to the patellar tendon. Arthroscopy verified the diagnosis but did not allow visualization of the full extent of the tumor. After arthroscopic excision of the associated hypertrophic medial plica, a miniarthrotomy was done. The tumor was attached to the periph-ery of the anterior horn of the medial meniscus, the anterior tibial plateau, and the fat pad. Its origin was from the venous plexus just below the anterior lip of the central tibial plateau. The patient was asympto-matic one and a half years after surgery. If the case is not amenable to arthroscopic surgery, open excision through miniarthrotomy ensures complete removal of the hemangiomas without recurrence.

Prognostic Factors in Slipped Capital Femoral Epiphysis / 대한정형외과학회잡지

Slipped capital femoral epiphysis is a rare disease in Korea, but the incidence has being increased according to the changes of body contour and life style. Now we have more concern about slipped capital femoral epiphysis, especially the factors which contribute to the final result of treatment. Many factors such as severity of slip, stability of slipped epiphysis, whether closed reduction was done or not, whether severe complication like avascular necrosis or chondrolysis has occurred or not have effect on the result. We analyzed 20 cases of slipped capital femoral epiphysis, which occurred in 16 adolescence in view of which factors contributed to the final satisfactory result. In our study, the difference in the duration of symptoms, instability of slipped epiphysis, patients age, association with obesity or acute trauma and the number of pins had much effect on the final results and whether the reduction was done or not, the kinds of pins and association with endocrinopathy made a little difference. But further studies are necessary because the number of cases is not sufficient and the length of follow up period is not long.

Necessity of Banked Autogenous Transfusion on the Total Knee Arthroplasty Using Autogenous Shed Blood Transfusion / 대한정형외과학회잡지

In the orthopaedic field, some elective surgeries such as joint replacement, spinal surgery and limb salvage procedures for musculoskeletal tumors frequently need various amounts of blood transfusions. However, homologous transfusion occasionally results in various side effects, such as allergic reaction, febrile reaction, and the transmission of infectious diseases such as syphilis, hepatitis and AIDS, ctc. Recently, these complications especially in elective surgery might result in medicolegal or social problems. Risks from transfusions in elective surgery can be minimized with prebanked autologous transfusion. To evaluate the necessity of prehanked autogenous transfusion, fifty five patients who had unilateral hybrid total knee arthroplasty (noncemented at the femoral side and cemented at the tibial and patellar sides) were operated on by the same surgeon from April 199S to July 1997 and had autogenous shed blood transfusion were evaluated for postoperative blood loss, amount of autogenous shed blood, amount of transfusion, hemoglobin and hematocrit. The results were as follows: 1. The distribution of preoperative hemoglobin was from 9.6g/dL to 16.5g/dL (average: 1.8g/dL). 2. The distribution of the amount of blood loss for three days postoperatively was from 156ml to 2001 ml (average: 798ml). 3. The distrihution of the amount of transfusion of autogenous shed blood was from 30ml to 600ml (average: 448ml). 4. There were two patients who had febrile reactions above 38 after transfusion of autogenous shed blood. 5. Forty-six patient(84%) had a homologous transfusion and the average amount of transfusion was 1.9 pint. 6. Total amount of homologous transfusion was decreased according to the increased amount of hemoglobin and the amount of transfusion was statistically decreased above the level of I 3g/dL(Students t-test, P=0.0005). 7. There were no significant differences in the amount of homologous transfusion between age, sex, type of disease, type of implants. In conclusion, most of our patients(84%) needed homologous blood transfusion in unilateral hyhrid total knee arthroplasty and the amount of transfusion decreased in patients who had hemoglobin above 13.0g/dL. So we recommend preparing banked autogenous hlood preoperatively in patients who have a lower hemoglobin level in unilateral hyhrid total knee arthroplasty.