Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2012.391.394SadeghpourA. RouhaniA. MohseniM.A. AghdamO.A. GoldustM. 82012158Developmental Dysplasia of the Hip (DDH) is a common congenital
malformation. Avascular necrosis of femoral head is the major complication of
both close and open reduction of the dislocated joint. Aim of this study was
to determine the incidence and influencing factors in different types of a vascular
necrosis of femoral head, following surgical treatment of developmental dysplasia
of hip in 1-7 years patients. In this study, 120 patients aged from 1 to 7 years
old with DDH who had been undergone open surgery, entered to the study. All
of these patients followed up for at least 1 year. Surgery procedures divided
to 4 groups: open reduction, open reduction+salter osteotomy, open reduction+femur
shortening and open reduction+salter osteotomy+femur shortening. The presence
of Avascular Necrosis (AVN) had been appraised. 27.5% of surgeries performed
on male and 72.5 on female patients. 35.0% of DDH cases were unilateral and
remaining was bilateral. 36 patients (30%) shows radiologic findings of AVN,
although all of them placed at group I of Bucholz-Ogden classification. 40%
of group A patients, 25% of group B, 14.3% of group C and 36.4% of group D patients
developed this findings. Open reduction of DDH in older children is effective
in the management of DDH and if all of the contrivance considered in the surgery,
the rate of AVN would be low and mild (at least in short term follow ups).]]>Barrett, W.P., L.T. Staheli and D.E. Chew,1986687987Burian, M., P. Dungl, J. Chomiak, M. Ostadal and M. Frydrychova,201077371377Dezateux, C. and K. Rosendahl,200736915411552Funk, J.F., C. Perka, A. Pruss, A.L. Meiss and R. Placzek,2008146720724Gulman, B., I.C. Tuncay, N. Dabak and N. Karaismailoglu,199414662666Joo, S.Y., C.W. Oh, L. Grissom, S.J. Kumar and G.D. MacEwen,200929540546Kesa, P., A. Pucher and W. Strzyzewski,200570249253Kitano, T., Y. Imai, M. Morita, K. Nakagawa and M. Wada et al.,201015443451Koizumi, W., H. Moriya, K. Tsuchiya, T. Takeuchi, M. Kamegaya and T. Akita,199678924929Kotnis, R., V. Spiteri, C. Little, T. Theologis, A. Wainwright and M.K. Benson,200817114119LeBel, M.E. and R. Gallien,200514331336Libri, R. and R.L. Marchesini,201020529534Morcuende, J.A., M.D. Meyer, L.A. Dolan and S.L. Weinstein,199779810817Pach, M., P. Kaminek and J. Mikulik,200875277281Perry, D.C. and C. Bruce,20102010Roth, A., D.A. Gibson and J.E. Hall,197498178182Sibinski, M., A. Grzegorzewski, M. Drobniewski and M. Synder,200974912Sibinski, M. and M. Synder,200626307309Sibinski, M., M. Synder and B. Pruszczynski,2006713336Walton, M.J., Z. Isaacson, D. McMillan, R. Hawkes and W.G. Atherton,20109210131016Wilkinson, R.H. and B.N. Weissman,19882612471265Wirth, C.J.,2005130W78W86Wu, K.W., T.M. Wang, S.C. Huang, K.N. Kuo and C.W. Chen,20109220832094Tukenmez, M. and G. Tezeren,200715286290