Effect of femoral component position on biomechanical outcomes of unicompartmental knee arthroplasty

Kang, Kyoung‐Tak; Son, Jung–Woo; Koh, Yong‐Gon; Kwon, Ohchan; Kwon, Sae Kwang; Lee, Yong Jun; Park, Kwan Kyu

doi:10.1016/j.knee.2018.03.003

Cited by 21 publications

(16 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A previously validated FE model of an intact knee joint was employed in this study to address our two main research questions ( Figure 1 ). 30 – 33 First, what biomechanical effect can the PCL-deficient UKA provide as compared to the intact PCL and the intact UKA? Second, how does an increased posterior tibial slope affect the kinematics and contact stress of the patellofemoral (PF) joint and tibial cartilage?…”

Section: Methodsmentioning

confidence: 99%

Biomechanical effect of tibial slope on the stability of medial unicompartmental knee arthroplasty in posterior cruciate ligament-deficient knees

Lee

Koh

Kim³

et al. 2020

Bone & Joint Research

Self Cite

View full text Add to dashboard Cite

Aims Unicompartmental knee arthroplasty (UKA) has become a popular method of treating knee localized osteoarthritis (OA). Additionally, the posterior cruciate ligament (PCL) is essential to maintaining the physiological kinematics and functions of the knee joint. Considering these factors, the purpose of this study was to investigate the biomechanical effects on PCL-deficient knees in medial UKA. Methods Computational simulations of five subject-specific models were performed for intact and PCL-deficient UKA with tibial slopes. Anteroposterior (AP) kinematics and contact stresses of the patellofemoral (PF) joint and the articular cartilage were evaluated under the deep-knee-bend condition. Results As compared to intact UKA, there was no significant difference in AP translation in PCL-deficient UKA with a low flexion angle, but AP translation significantly increased in the PCL-deficient UKA with high flexion angles. Additionally, the increased AP translation became decreased as the posterior tibial slope increased. The contact stress in the PF joint and the articular cartilage significantly increased in the PCL-deficient UKA, as compared to the intact UKA. Additionally, the increased posterior tibial slope resulted in a significant decrease in the contact stress on PF joint but significantly increased the contact stresses on the articular cartilage. Conclusion Our results showed that the posterior stability for low flexion activities in PCL-deficient UKA remained unaffected; however, the posterior stability for high flexion activities was affected. This indicates that a functional PCL is required to ensure normal stability in UKA. Additionally, posterior stability and PF joint may reduce the overall risk of progressive OA by increasing the posterior tibial slope. However, the excessive posterior tibial slope must be avoided. Cite this article: Bone Joint Res 2020;9(9):593–600.

show abstract

Section: Methodsmentioning

confidence: 99%

Biomechanical effect of tibial slope on the stability of medial unicompartmental knee arthroplasty in posterior cruciate ligament-deficient knees

Lee

Koh

Kim³

et al. 2020

Bone & Joint Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…The guide should be lateralized as far as possible, aligning to the lateral border of the medial femoral condyle to avoid impingement on the intercondylar notch. This will increase the likelihood of the tibial component to properly track with the femur in extension and prevent patellofemoral impingement [63]. When properly sized, there should be a rim of at least 2 mm of exposed bone, anterior and medial to the femoral finishing guide (Fig.…”

Section: Femoral Sizing and Final Femoral Preparation Femoral Sizingmentioning

confidence: 99%

Evidence-based surgical technique for medial unicompartmental knee arthroplasty

Kim¹,

Mittal²,

Meshram³

et al. 2021

Knee Surg & Relat Res

View full text Add to dashboard Cite

Unicompartmental knee arthroplasty (UKA) is a successful treatment modality in selected patients having advanced, single-compartment osteoarthritis of the knee. The bone and ligament preservation leading to shorter recovery periods, better functional outcomes, lower perioperative complication rates, and easier revision, if needed, are proposed as some of the advantages of UKA over total knee arthroplasty (TKA). Despite several advantages, UKA is reported to have higher failure rates as compared to TKA. The prosthesis failure of UKA is directly correlated to intraoperative technique-related factors like malpositioning of components and the inability to replicate the target-limb alignment as per preoperative planning. An evidence-based surgical technique for UKA may help surgeons to avoid the intraoperative technique-related errors. The purpose of this paper is to describe a stepwise surgical technique for the fixed-bearing medial UKA.

show abstract

“…However, recent studies have focused not only on stress or strain on bone, but also looked at stress on soft tissue. Therefore, modeling not only of the femur, but also of cartilage and the lateral meniscus became required (Innocenti et al, 2014;Innocenti et al, 2016;Kang et al, 2018f;Kang et al, 2019c;Kang et al, 2018h;Kang et al, 2018i;Kang et al, 2018j;Kwon et al, 2014;Kwon et al, 2017;Park et al, 2019;Simpson, Price, Gulati, Murray and Gill, 2009;Wen et al, 2017;Zhu et al, 2015).…”

Section: Application Of Computational Simulation In Pre-or Post-clinimentioning

confidence: 99%

“…The bone stress and ligament strain can potentially lead to an osteoarthritic progression under static loading conditions (Innocenti, Bilgen, Labey, van Lenthe, Sloten and Catani, 2014). In addition, Kang et al showed that the best position for the femoral component in UKA could be the center of the distal femoral condyle under dynamic loading conditions (Kang, Son, Koh, Kwon, Kwon, Lee and Park, 2018i). Femoral component position could be one of the important factors that influence the contact stresses on the tibial insert and articular cartilage, hence the postoperative significance of the femoral component position in UKA (Kang, Son, Koh, Kwon, Kwon, Lee and Park, 2018i).…”

Section: Application Of Computational Simulation In Pre-or Post-clinimentioning

confidence: 99%

Computational biomechanics of knee joint arthroplasty : a review

Kang

Koh

Lee

et al. 2020

Mechanical Engineering Reviews

Self Cite

View full text Add to dashboard Cite

Computational models have been widely used for more than four decades to evaluate the mechanical behavior of knee joint arthroplasty. Validated computational models provide a virtual platform to develop optimal articular surfaces which achieve desired implant characteristics. This review paper provides a comprehensive overview of the computational models available to represent knee joint arthroplasty. A brief overview of knee joint anatomy and arthroplasty is provided, followed by computational model development techniques. Use of the computational models in development of knee joint arthroplasty and pre-or post-clinical evaluation is summarized. This review paper presents current modeling capabilities for implant design and stability, with further suggestions for studying the performance of implants on a population level. However, simulations must include closely corroborated multi-domain analysis in order to account for real-life variability.

show abstract

Effect of femoral component position on biomechanical outcomes of unicompartmental knee arthroplasty

Cited by 21 publications

References 50 publications

Biomechanical effect of tibial slope on the stability of medial unicompartmental knee arthroplasty in posterior cruciate ligament-deficient knees

Biomechanical effect of tibial slope on the stability of medial unicompartmental knee arthroplasty in posterior cruciate ligament-deficient knees

Evidence-based surgical technique for medial unicompartmental knee arthroplasty

Computational biomechanics of knee joint arthroplasty : a review

Contact Info

Product

Resources

About