Fan Stacy, Padmore Clare, Kadar Assaf, Chambers Spencer, Langohr G Daniel G, Suh Nina
Division of Plastic and Reconstructive Surgery, University of Western Ontario, Roth|McFarlane Hand and Upper Limb Centre, St. Joseph's Health Care, London, ON, Canada.
Bioengineering Research Laboratory, Roth|McFarlane Hand and Upper Limb Centre, St. Joseph's Health Care London, London, ON, Canada.
J Orthop. 2021 Feb 24;24:102-110. doi: 10.1016/j.jor.2021.02.032. eCollection 2021 Mar-Apr.
To compare changes in wrist kinematics after scaphoidectomy and four-corner fusion (4CF), and proximal row carpectomy (PRC).
Six cadaveric specimens underwent flexion-extension, radial-ulnar deviation and circumduction in an active motion wrist simulator. Native state, "anatomic 4CF", "radial 4CF", and PRC were compared.
Radial 4CF reduced wrist extension, while PRC reduced radial deviation. Fusion groups had similar motion profiles. 44%, 41%, and 32% of native circumduction was maintained in PRC, anatomic, and radial 4CF.
Both fusion positions resulted in comparable motion outcomes. Anatomic 4CF was restricted in wrist extension compared to PRC but provided favourable radial deviation.
比较舟骨切除术、四角融合术（4CF）和近排腕骨切除术（PRC）后腕关节运动学的变化。
六个尸体标本在主动运动腕关节模拟器中进行屈伸、桡尺偏斜和环转运动。比较自然状态、“解剖型4CF”、“桡侧4CF”和PRC。
桡侧4CF减少了腕关节伸展，而PRC减少了桡偏。融合组具有相似的运动特征。PRC、解剖型和桡侧4CF分别保留了自然环转运动的44%、41%和32%。
两种融合位置产生了相当的运动结果。与PRC相比，解剖型4CF在腕关节伸展方面受到限制，但提供了良好的桡偏。
