Effects of Medial Displacement Calcaneal Osteotomy and Calcaneal Z Osteotomy on Subtalar Joint Pressures: A Cadaveric Flatfoot Model

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• 作者：Nathan Patrick ; MDp>1p> ; Gregory S. Lewis ; PhDp>2p> ; Evan P. Roush ; BSp>3p> ; Allen R. Kunselman ; MAp>4p> ; Jarrett D. Cain ; DPM ; MSc ; FACFASp>5p>p> ; p>p>jcain1@hmc.psu.edu" class="auth_mail" title="E-mail the corresponding authorp>
• 关键词：5
• 刊名：The Journal of Foot and Ankle Surgery
• 出版年：2016
• 出版时间：November-December 2016
• 年：2016
• 卷：55
• 期：6
• 页码：1175-1179
• 全文大小：866 K

文摘

Medial displacement calcaneal osteotomies have been shown to be successful in the surgical management of adult acquired flatfoot, in particular, stage 2 deformity. Classically, the medial displacement calcaneal osteotomy technique has been performed. However, a calcaneal pan class="sansserif">Zpan> osteotomy has been more recently described and applied in the surgical management of flatfoot deformity. Although the potential advantages of the calcaneal pan class="sansserif">Zpan> technique have been reported, data on its effect on the subtalar joint are lacking. A validated flatfoot model was induced in 8 cadaveric feet that had been randomly assigned to either medial displacement calcaneal osteotomy (n = 4) or calcaneal pan class="sansserif">Zpan> osteotomy (n = 4). The feet were loaded through the tibia with a constant ground reaction force of 400 N, with a simultaneous increase in the Achilles tendon force to 300 or 500 N. The subtalar joint pressures were recorded before and after osteotomy. We did not detect any statistically significant differences between the 2 techniques in terms of their effects on subtalar joint pressure.