Total Hip Replacement For Bilateral Dysplastic Osteoarthritic Hip.

概要

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We analyzed 29 THRs of 22 patients with bilateral dysplastic osteoarthritic hips. The patients rarged in age from 37 to 62 years (mean: 59 years), and were evaluated on average 5.8 years after the replacement.Clinical evaluations were performed using the JOA score, ROM, MMT for abduction and leg length inequality. X-ray results evaluted the socket position, height of the major and minor trochanter and prosthetic loosening.On the operated side, the lower the socket position, the better the functional results as assessed by ROM and MMT. Results led us to conclude that the upperlimit of socket height (measured from the cup center) may be 30mm from the teardrop-line in order to achieve functional and long-lashng THR. A lower socket position leading to leg lengthening on the operafed side might also lead to better clinical results through a varus effect on the unoperated femoral head.
西日本整形・災害外科学会の論文