胫骨近端后倾角的极大变异性：在接受 UKA 的 2395 例 CT 扫描患者中的测量值
Extreme variability in posterior slope of the proximal tibia: measurements on 2395 CT scans of patients undergoing UKA?
机构信息
Washington University School of Medicine/Barnes-Jewish Hospital, St. Louis, Missouri.
Arkansas Specialty Orthopaedics, Little Rock, Arkansas.
出版信息
J Arthroplasty. 2014 Aug;29(8):1677-80. doi: 10.1016/j.arth.2014.03.024. Epub 2014 Mar 28.
Abstract
Data regarding the posterior slope of the tibia (PTS) are limited and sometimes conflicting. The purpose of this study was to determine the native posterior tibial slope in patients undergoing a medial or lateral UKA. A retrospective review was performed on 2395 CT scans in patients indicated for UKA, and the PTS of the osteoarthritic compartment was measured relative to a plane set perpendicular to the sagittal, tibial mechanical axis. The mean preoperative PTS in patients undergoing medial UKA was 6.8°+3.3°, with 34.3% between 4° and 7°. The mean preoperative PTS in patients undergoing lateral UKA was 8.0°+3.3°, with 27.5% between 4° and 7°. If attempting to recreate a patient's preoperative tibial slope, a routine target of 5° to 7° will produce a posterior slope less than the patient's native anatomy in 47% of patients undergoing UKA. This is the first, large CT-based review of posterior slope variation of the proximal tibia in patients undergoing UKA.
摘要
有关胫骨后倾角（PTS）的数据有限，有时甚至相互矛盾。本研究旨在确定行内侧或外侧 UKA 患者的胫骨原始后倾角。对因 UKA 而接受检查的 2395 例 CT 扫描进行了回顾性分析，并相对于垂直于矢状面、胫骨机械轴的平面来测量骨关节炎间隙的 PTS。行内侧 UKA 的患者术前 PTS 的平均值为 6.8°+3.3°，其中 34.3%在 4°至 7°之间。行外侧 UKA 的患者术前 PTS 的平均值为 8.0°+3.3°，其中 27.5%在 4°至 7°之间。如果试图重现患者的术前胫骨斜率，常规的 5°至 7°目标将导致 47%接受 UKA 的患者的后斜率小于患者的原始解剖结构。这是首次对接受 UKA 的患者胫骨近端后倾角变化进行的大型基于 CT 的回顾性分析。
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