scholarly journals Three-dimensional motion analysis of the patellar component in total knee arthroplasty by the image matching method using image correlations

2014 ◽  
Vol 32 (5) ◽  
pp. 619-626 ◽  
Author(s):  
Masami Ishimaru ◽  
Yoshitaka Shiraishi ◽  
Satoru Ikebe ◽  
Hidehiko Higaki ◽  
Kazunori Hino ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Motion Analysis ◽  
Knee Arthroplasty ◽  
Image Matching ◽  
Three Dimensional ◽  
Matching Method ◽  
Patellar Component ◽  
Total Knee

The Development of Motion Analysis Method for Total Knee Arthroplasty using Image-Matching Technique

2002 ◽  
Vol 2002.2 (0) ◽  
pp. 79-80
Author(s):  
Takeshi SHIMOTO ◽  
Hidehiko HIGAKI ◽  
Kazuhumi MIYABE ◽  
Hideo MATSUOKA ◽  
Hiromasa MIURA ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Motion Analysis ◽  
Knee Arthroplasty ◽  
Image Matching ◽  
Analysis Method ◽  
Matching Technique ◽  
Total Knee

Evaluation and Analysis of the Onlay Patellar Component in Total Knee Arthroplasty

2010 ◽  
Vol 97-101 ◽  
pp. 3773-3776 ◽  
Author(s):  
Chien Wei Liu ◽  
Chia Chi Lo ◽  
Ching Sung Wang ◽  
Chen Tung Yu
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Three Dimensional ◽  
Element Model ◽  
Clinical Results ◽  
Original Design ◽  
Design Modification ◽  
Patellar Component ◽  
Significant Difference ◽  
Total Knee

Complications in total knee arthroplasty (TKA), which may include the inaccuracy of the implantation and the poor component design, can cause major failures in the TKA. Therefore, the present investigation studies the onlay knee implants commonly used clinically to find the major causes of the damage to artificial patella by the computer aided analysis of the three-dimensional finite element model of the artificial patello-femoral joint built through reverse engineering. Results showed that although a significant difference is found in the condition and the state of the stress distribution generated as the patello-femoral joint changes with the flexion of the knees, this variation is still within the tolerable range; but the patellar lateral tilt is something that caught our attention. Furthermore, through the comparison between the study and the clinical results, this investigation concludes that the bone cement on the implant interface is the major cause for the breaking of the pegs, and is not related to the original design of the patella. This study also discovers that slight design modification on the parts of commonly used artificial joints may effectively reduce surgical failure rate; therefore, a more robust design configuration for patellar pegs is proposed.

1306 Motion Analysis for Cruciate-Retaining Total Knee Arthroplasty using Image Matching Technique

2006 ◽  
Vol 2006.6 (0) ◽  
pp. 97-98
Author(s):  
Takeshi SHIMOTO ◽  
Hidehiko HIGAKI ◽  
Masa-aki YOSHIZUMI ◽  
Satoshi HAMAI ◽  
Yoshitaka NAKANISHI ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Motion Analysis ◽  
Knee Arthroplasty ◽  
Image Matching ◽  
Cruciate Retaining ◽  
Matching Technique ◽  
Total Knee

849 Motion Analysis for Posterior-Stabilized Total Knee Arthroplasty using Image Matching Technique

2008 ◽  
Vol 2008.5 (0) ◽  
pp. 89-90
Author(s):  
Tatsumi FUKUSHIMA ◽  
Hidehiko HIGAKI ◽  
Yoshitaka SHIRAISHI ◽  
Takeshi SHIMOTO ◽  
Satoshi HAMAI ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Motion Analysis ◽  
Knee Arthroplasty ◽  
Image Matching ◽  
Posterior Stabilized ◽  
Matching Technique ◽  
Total Knee

Low-Degree Tibial Slope Angle Prevents Component Overhang by Enlarging the Lateral Plateau Surface Area in Total Knee Arthroplasty

2020 ◽  
Author(s):  
Mehmet Emin Simsek ◽  
Mustafa Akkaya ◽  
Safa Gursoy ◽  
Özgür Kaya ◽  
Murat Bozkurt
Keyword(s):  
Total Knee Arthroplasty ◽  
Surface Area ◽  
Knee Arthroplasty ◽  
Tibial Plateau ◽  
Slope Angle ◽  
Three Dimensional ◽  
Tibial Slope ◽  
Total Knee ◽  
Lateral Plateau ◽  
Gender Groups

AbstractThis study aimed to investigate whether overhang or underhang around the tibial component that occurs during the placement of tibial baseplates was affected by different slope angles of the tibial plateau and determine the changes in the lateral and medial plateau diameters while changing the slope angle in total knee arthroplasty. Three-dimensional tibia models were reconstructed using the computed tomography scans of 120 tibial dry bones. Tibial plateau slope cuts were performed with 9, 7, 5, 3, and 0 degrees of slope angles 2-mm below the subchondral bone in the deepest point of the medial plateau. Total, lateral, and medial tibial plateau areas and overhang/underhang rates were measured at each cut level. Digital implantations of the asymmetric and symmetric tibial baseplates were made on the tibial plateau with each slope angles. Following the implantations, the slope angle that prevents overhang or underhang at the bone border and the slope angle that has more surface area was identified. A significant increase was noted in the total tibial surface area, lateral plateau surface area, and lateral anteroposterior distance, whereas the slope cut angles were changed from 9 to 0 degrees in both gender groups. It was found that the amount of posteromedial underhang and posterolateral overhang increased in both the asymmetric and symmetric tibial baseplates when the slope angle was changed from 0 to 9 degrees. Although the mediolateral diameter did not change after the proximal tibia cuts at different slope angles, the surface area and anteroposterior diameter of the lateral plateau could change, leading to increased lateral plateau area. Although prosthesis designs are highly compatible with the tibial surface area, it should be noted that the component overhangs, especially beyond the posterolateral edge, it can be prevented by changing the slope cut angle in males and females.

FATE OF THE UNREVISED ALL-POLYETHYLENE PATELLAR COMPONENT IN REVISION TOTAL KNEE ARTHROPLASTY

2003 ◽  
Vol 85 (1) ◽  
pp. 56-59 ◽  
Author(s):  
JESS H. LONNER ◽  
MICHAEL A. MONT ◽  
PETER F. SHARKEY ◽  
JOHN M. SILISKI ◽  
AMAR D. RAJADHYAKSHA ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Revision Total Knee Arthroplasty ◽  
Patellar Component ◽  
Total Knee

scholarly journals Finite-element analysis of the proximal tibial sclerotic bone and different alignment in total knee arthroplasty

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Ye-Ran Li ◽  
Yu-Hang Gao ◽  
Chen Yang ◽  
Lu Ding ◽  
Xuebo Zhang ◽  
...  
Keyword(s):  
Finite Element ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Tibial Plateau ◽  
Three Dimensional ◽  
Genu Varum ◽  
Sclerotic Bone ◽  
Dimensional Measurements ◽  
Tibial Cut ◽  
Total Knee

Abstract Background Despite potential for improving patient outcomes, studies using three-dimensional measurements to quantify proximal tibial sclerotic bone and its effects on prosthesis stability after total knee arthroplasty (TKA) are lacking. Therefore, this study aimed to determine: (1) the distribution range of tibial sclerotic bone in patients with severe genu varum using three-dimensional measurements, (2) the effect of the proximal tibial sclerotic bone thickness on prosthesis stability according to finite-element modelling of TKA with kinematic alignment (KA), mechanical alignment (MA), and 3° valgus alignment, and (3) the effect of short extension stem augment utilization on prosthesis stability. Methods The sclerotic bone in the medial tibial plateau of 116 patients with severe genu varum was measured and classified according to its position and thickness. Based on these cases, finite-element models were established to simulate 3 different tibial cut alignments with 4 different thicknesses of the sclerotic bone to measure the stress distribution of the tibia and tibial prosthesis, the relative micromotion beneath the stem, and the influence of the short extension stem on stability. Results The distribution range of proximal tibial sclerotic bone was at the anteromedial tibial plateau. The models were divided into four types according to the thickness of the sclerotic bone: 15 mm, 10 mm, 5 mm, and 0 mm. The relative micromotion under maximum stress was smallest after MA with no sclerotic bone (3241 μm) and largest after KA with 15 mm sclerotic bone (4467 μm). Relative micromotion was largest with KA and smallest with MA in sclerotic models with the same thickness. Relative micromotion increased as thickness of the sclerotic bone increased with KA and MA (R = 0.937, P = 0.03 and R = 0.756, P = 0.07, respectively). Relative micromotion decreased with short extension stem augment in the KA model when there was proximal tibial sclerotic bone. Conclusions The influence of proximal tibial sclerotic bone on prosthesis’s stability is significant, especially with KA tibial cut. Tibial component’s short extension stem augment can improve stability.

Evaluation of a 3D-printed total knee arthroplasty using radiostereometric analysis

2019 ◽  
Vol 101-B (7_Supple_C) ◽  
pp. 40-47 ◽  
Author(s):  
S. Sporer ◽  
L. MacLean ◽  
A. Burger ◽  
M. Moric
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Radiostereometric Analysis ◽  
Biological Fixation ◽  
Implant Surface ◽  
Patellar Component ◽  
Patient Reported ◽  
3D Printed ◽  
Total Knee ◽  
Highly Porous

AimsOur intention was to investigate if the highly porous biological fixation surfaces of a new 3D-printed total knee arthroplasty (TKA) achieved adequate fixation of the tibial and patellar components to the underlying bone.Patients and MethodsA total of 29 patients undergoing primary TKA consented to participate in this prospective cohort study. All patients received a highly porous tibial baseplate and metal-backed patella. Patient-reported outcomes measures were recorded and implant migration was assessed using radiostereometric analysis.ResultsPatient function significantly improved by three months postoperatively (p < 0.001). Mean difference in maximum total point motion between 12 and 24 months was 0.021 mm (-0.265 to 0.572) for the tibial implant and 0.089 mm (-0.337 to 0.758) for the patellar implant. The rate of tibial and patellar migration was largest over the first six postoperative weeks, with no changes in mean tibia migration occurring after six months, and no changes in mean patellar migration occurring after six weeks. One patellar component showed a rapid rate of migration between 12 and 24 months.ConclusionBiological fixation appears to occur reliably on the highly porous implant surface of the tibial baseplate and metal-backed patellar component. Rapid migration after 12 months was measured for one patellar component. Further investigation is required to assess the long-term stability of the 3D-printed components and to determine if the high-migrating components achieve fixation. Cite this article: Bone Joint J 2019;101-B(7 Supple C):40–47

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