Analysis of the Relationship between Posterior Cruciate Ligament Preservation and Femoral Component Sizein Total Knee Arthroplasty

2006 ◽  
Vol 41 (3) ◽  
pp. 461
Author(s):  
Jai Gon Seo ◽  
Young Wan Moon ◽  
Chan Ha Hwang ◽  
Hong Je Kang
Keyword(s):  
Total Knee Arthroplasty ◽  
Posterior Cruciate Ligament ◽  
Femoral Component ◽  
Knee Arthroplasty ◽  
Cruciate Ligament ◽  
Total Knee ◽  
The Relationship

Influence of Variation in Sagittal Placement of the Femoral Component after Cruciate-Retaining Total-Knee Arthroplasty

2019 ◽  
Author(s):  
Yong-Gon Koh ◽  
Hyoung-Taek Hong ◽  
Hwa-Yong Lee ◽  
Hyo-Jeong Kim ◽  
Kyoung-Tak Kang
Keyword(s):  
Total Knee Arthroplasty ◽  
Posterior Cruciate Ligament ◽  
Femoral Component ◽  
Contact Force ◽  
Knee Arthroplasty ◽  
Cruciate Ligament ◽  
Cruciate Retaining ◽  
Total Knee ◽  
Quadriceps Force ◽  
Femoral Component Flexion

AbstractProsthetic alignment is an important factor for long-term survival in cruciate-retaining (CR) total knee arthroplasty (TKA). The purpose of this study is to investigate the influence of sagittal placement of the femoral component on tibiofemoral (TF) kinematics and kinetics in CR-TKA. Five sagittal placements of femoral component models with −3, 0, 3, 5, and 7 degrees of flexion are developed. The TF joint kinematics, quadriceps force, patellofemoral contact force, and posterior cruciate ligament force are evaluated using the models under deep knee-bend loading. The kinematics of posterior TF translation is found to occur with the increase in femoral-component flexion. The quadriceps force and patellofemoral contact force decrease with the femoral-component flexion increase. In addition, extension of the femoral component increases with the increase in posterior cruciate ligament force. The flexed femoral component in CR-TKA provides a positive biomechanical effect compared with a neutral position. Slight flexion could be an effective alternative technique to enable positive biomechanical effects with TKA prostheses.

Posterior Cruciate Ligament (PCL)-Sacrificing Total Knee Arthroplasty

2014 ◽  
pp. 3201-3210
Author(s):  
Matthew T. Brown ◽  
Jagmeet S. Bhamra ◽  
J. Palmer ◽  
A. Olivier ◽  
Panagiotis D. Gikas ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Posterior Cruciate Ligament ◽  
Knee Arthroplasty ◽  
Cruciate Ligament ◽  
Total Knee

Posterior cruciate ligament resection in total knee arthroplasty

2019 ◽  
Vol 101-B (10) ◽  
pp. 1230-1237 ◽  
Author(s):  
Babar Kayani ◽  
Sujith Konan ◽  
Saman Horriat ◽  
Mazin S. Ibrahim ◽  
Fares S. Haddad
Keyword(s):  
Total Knee Arthroplasty ◽  
Posterior Cruciate Ligament ◽  
Knee Arthroplasty ◽  
Cruciate Ligament ◽  
Limb Alignment ◽  
Flexion Gap ◽  
Flexion Extension ◽  
Total Knee ◽  
The Mean ◽  
Extension Gap

Aims The aim of this study was to assess the effect of posterior cruciate ligament (PCL) resection on flexion-extension gaps, mediolateral soft-tissue laxity, fixed flexion deformity (FFD), and limb alignment during posterior-stabilized (PS) total knee arthroplasty (TKA). Patients and Methods This prospective study included 110 patients with symptomatic osteoarthritis of the knee undergoing primary robot-assisted PS TKA. All operations were performed by a single surgeon using a standard medial parapatellar approach. Optical motion capture technology with fixed femoral and tibial registration pins was used to assess gaps before and after PCL resection in extension and 90° knee flexion. Measurements were made after excision of the anterior cruciate ligament and prior to bone resection. There were 54 men (49.1%) and 56 women (50.9%) with a mean age of 68 years (sd 6.2) at the time of surgery. The mean preoperative hip-knee-ankle deformity was 4.1° varus (sd 3.4). Results PCL resection increased the mean flexion gap significantly more than the extension gap in the medial (2.4 mm (sd 1.5) vs 1.3 mm (sd 1.0); p < 0.001) and lateral (3.3 mm (sd 1.6) vs 1.2 mm (sd 0.9); p < 0.01) compartments. The mean gap differences after PCL resection created significant mediolateral laxity in flexion (gap difference: 1.1 mm (sd 2.5); p < 0.001) but not in extension (gap difference: 0.1 mm (sd 2.1); p = 0.51). PCL resection significantly improved the mean FFD (6.3° (sd 4.4) preoperatively vs 3.1° (sd 1.5) postoperatively; p < 0.001). There was a strong positive correlation between the preoperative FFD and change in FFD following PCL resection (Pearson’s correlation coefficient = 0.81; p < 0.001). PCL resection did not significantly affect limb alignment (mean change in alignment: 0.2° valgus (sd 1.2); p = 0.60). Conclusion PCL resection creates flexion-extension mismatch by increasing the flexion gap more than the extension gap. The increase in the lateral flexion gap is greater than the increase in the medial flexion gap, which creates mediolateral laxity in flexion. Improvements in FFD following PCL resection are dependent on the degree of deformity before PCL resection. Cite this article: Bone Joint J 2019;101-B:1230–1237

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