Reclassification of osteogenesis imperfecta into a congenita type and two tarda types was pro-posed by Kenneth A. Falvo et al in 1974.
Ten cases of osteogenesis imperfecta, treated at orthopedic department of Seoul Red Cross Hos-` pital between Oct. 1972 and Sept. 1975 were analyzed with the following results.
1. According to the classification, congenita type was seen in two patients, tazda type 1 in six patients, and tarda type 2 in two patients.
2. The new classification was quite reasonable in evaluation of the severity, treatment, and prognosis of the disease.
3. Family history suggesting hereditary trait was observed in the most of the tarda type but none in congenita type.
4. Itsultiple osteotomy and intramedallary rod insertion-Sofield operation was satisfactory in correction of deformity and recovery of function but complication, such as longitudinal migration and protrusion of lod, should be considered.
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