1Morrey BF, Bryan RS, Dobyns JH, et al. Total elbow arthro- plasty. A fve year experience at the Mayo Clinic [ J ]. J Bone Joint Surg Am,1981,63(7) :1050 -1063.
2Michelesson JE, Rauschning W. Pathogenesis of experimen- tal heterotopie bone formation following temporary forcible exercising of immobilized limbs [ J ]. Clin Orthop Relat Res, 1983, (176) :265 - 272.