• Int Orthop · Jan 2017

    The clinical features of osteogenesis imperfecta in Vietnam.

    • Ho Duy Binh, Katre Maasalu, Vu Chi Dung, Can T Bich Ngoc, Ton That Hung, Tran V Nam, Le N Thanh Nhan, Ele Prans, Ene Reimann, Lidiia Zhytnik, Sulev Kõks, and Aare Märtson.
    • Hue University of Medicine and Pharmacy, Hue University, 06 ngo Quyen, Hue, 530000, Vietnam. binhthuybi@yahoo.com.
    • Int Orthop. 2017 Jan 1; 41 (1): 21-29.

    PurposeOsteogenesis imperfecta (OI) has not been studied in a Vietnamese population before. The aim of this study was to systematically collect epidemiological information, investigate clinical features and create a clinical database of OI patients in Vietnam for future research and treatment strategy development.MethodParticipants underwent clinical and physical examinations; also medical records were reviewed. Genealogical information was collected and family members' phenotypical manifestations recorded. Cases were classified according to the Sillence classification.ResultsIn total, 146 OI patients from 120 families were studied: 46 with OI Type I, 46 with Type III and 54 with Type IV. Almost patients had skeletal deformations. One hundred and forty-two had a history of fractures, 117 blue sclera, 89 dentinogenesis imperfecta and 26 hearing loss. The total number of fractures was 1,932. Thirty-four patients had intra-uterine fractures and nine had perinatal fractures. Surgery was performed 163 times in 58 patients; 100 osteosyntheses and 63 osteotomies. Bisphosphonate treatment was used in 37 patients. The number of affected individuals and predominance of severe forms of OI indicate that the disease is under diagnosed in Vietnam, especially in cases without a family history or with mild form of OI. Deformities appeared in all patients with different severity and localisation, affecting mostly the lower limbs. OI medical and surgical treatment rates are low and in most cases surgery was performed due to fractures.ConclusionsCompared to previous studies, our results indicate a lower OI prevalence and greater severity of symptoms in the Vietnamese population when compared with other areas. Further investigation, improved diagnosis and treatment are needed to increase the patients' quality of life.

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