Chaiyakit Pruk, Meknavin Surapoj, Hongku Natthapong
Department of Orthopaedic Surgery, Faculty of Medicine, Bangkok Metropolitan Administration Medical College and Vajira Hospital, Bangkok, Thailand.
J Med Assoc Thai. 2009 Dec;92 Suppl 6:S80-4.
The authors prospectively measure the effects of Posterior Cruciate Ligament (PCL) excision in Total Knee Arthroplasty (TKA) using Computer Assisted Surgery (CAS).
Between April 2008 and June 2008, sixteen knees of fifteen patients with varus deformity less than 20 degree and grossly intact PCL were included in this study. Using CAS and tensioning device to maintain consistent pressure, extension and flexion gap on both medial and lateral side before and after resection of PCL was recorded.
The mean increases of extension gap on medial and lateral side after resection of PCL are 0.17 +/- 0.22 mm (-0.17 to 0.5 mm) and 0.25 +/- 0.37 mm (-0.33 to 1.16 mm) respectively. The mean increases of flexion gap on medial and lateral side are 1.29 +/- 1.02 mm (0-3 mm) and 2.09 +/- 1.12 (0.5-4.66 mm) respectively.
Resection of PCL showed increase of flexion gap more than extension gap (p-value < 0.05) and lateral side of flexion gap always increase more than medial side (p-value < 0.05).
作者前瞻性地测量在全膝关节置换术（TKA）中使用计算机辅助手术（CAS）切除后交叉韧带（PCL）的效果。
2008年4月至2008年6月，本研究纳入了15例患者的16个膝关节，这些患者内翻畸形小于20度且PCL大体完整。使用CAS和张紧装置维持一致的压力，记录PCL切除前后内外侧的伸直间隙和屈曲间隙。
PCL切除后内侧和外侧伸直间隙的平均增加分别为0.17±0.22毫米（-0.17至0.5毫米）和0.25±0.37毫米（-0.33至1.16毫米）。内侧和外侧屈曲间隙的平均增加分别为1.29±1.02毫米（0至3毫米）和2.09±1.12（0.5至4.66毫米）。
PCL切除显示屈曲间隙的增加大于伸直间隙（p值<0.05），且屈曲间隙的外侧总是比内侧增加更多（p值<0.05）。
