Trovato Alexandra N, Bornes Troy D, El-Rich Marwan, Dhillon Sukhvinder S, Adeeb Samer, Jomha Nadr M
Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada.
Department of Surgery, University of Alberta, Edmonton, Alberta, Canada.
J Orthop. 2018 Feb 3;15(1):230-235. doi: 10.1016/j.jor.2018.01.015. eCollection 2018 Mar.
Treatment for talar avascular necrosis is challenging. This study evaluates the feasibility of a generic talar implant by cadaveric assessment. Ten cadaveric ankles were CT-scanned to determine talar implant size. The opposite ankles were CT-scanned with the biological talus and then with the implant. 3D ankle geometry was reconstructed and implant position was compared to the biological talus position. The averages among specimens' positive and negative average-deviations were 0.91 mm and 0.70 mm. Seventy percent of talar dome deviations between the biological talus and implant were within an acceptable range. This study yields promising results to support a generic talus bone prosthetic.
距骨缺血性坏死的治疗颇具挑战性。本研究通过尸体评估来评估通用距骨植入物的可行性。对10个尸体踝关节进行CT扫描以确定距骨植入物的尺寸。对另一侧踝关节先用生物距骨进行CT扫描，然后再用植入物进行扫描。重建踝关节的三维几何结构，并将植入物位置与生物距骨位置进行比较。标本的正、负平均偏差的平均值分别为0.91毫米和0.70毫米。生物距骨与植入物之间距骨穹顶偏差的70%在可接受范围内。本研究取得了有前景的结果，以支持通用距骨骨假体。
