Effects of posterior cruciate ligament resection in total knee arthroplasty using computer assisted surgery
Chaiyakit, P.; Meknavin, S.; Hongku, N.
Journal of the Medical Association of Thailand 92 Suppl. 6: S80-S84
2009
ISSN/ISBN: 0125-2208 PMID: 20128073 Document Number: 12294
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).