Kinematics of monoblock bicompartmental knee arthroplasty during weight-bearing activities

Park, Brian H.; Leffler, Jorg; Franz, Axel R.; Dunbar, Nicholas J.; Banks, Scott A.

doi:10.1007/s00167-014-3427-1

Cited by 6 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Joint kinematics were determined from the 3‐D pose of each implant model using standard conventions for joint rotations and translations [13]. Anteroposterior (AP) condylar translations were evaluated using a previously described contact analysis method [32]. Femoral contact points were evaluated by implementing a nearest‐neighbor algorithm in MATLAB to find the nearest vertex in the tibial insert STL model to each vertex in the femoral STL model by Euclidean distance [32].…”

Section: Methodsmentioning

confidence: 99%

“…Anteroposterior (AP) condylar translations were evaluated using a previously described contact analysis method [32]. Femoral contact points were evaluated by implementing a nearest‐neighbor algorithm in MATLAB to find the nearest vertex in the tibial insert STL model to each vertex in the femoral STL model by Euclidean distance [32]. Regions of the insert and femoral component were selected, such that the intercondylar region was excluded during contact analysis.…”

Section: Methodsmentioning

confidence: 99%

“…Regions of the insert and femoral component were selected, such that the intercondylar region was excluded during contact analysis. The contact points are defined as the geometric centroid of the nearest neighbors on the tibial insert that fell below a 4 mm contact threshold [27, 32]. The 4 mm threshold was chosen after running the contact analysis with thresholds varying from 1 to 10 mm, in 1 mm increments.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Posterior cruciate-retaining total knee arthroplasty exhibits small kinematic changes in the first postoperative year

Palm-Vlasak

Smith

Harvey

et al. 2022

Knee Surg Sports Traumatol Arthrosc

Self Cite

View full text Add to dashboard Cite

Purpose Fluoroscopic knee kinematics have historically been quantiied at least 1 year after total knee arthroplasty (TKA). The purpose of this study was to longitudinally assess knee kinematics at 6-12 weeks, 6 months, and 1 year after TKA to determine if earlier evaluation may be justiied. Methods Twenty-one patients participated after undergoing TKA with a posterior cruciate ligament-retaining ixed-bearing prosthesis. Fluoroscopic examinations of lunge, kneel, and step-up activities were performed at 12 ± 4 weeks (V1), 7 ± 2 months (V2), and 13 ± 2 months (V3) postoperatively. Images were analyzed using a three-dimensional to two-dimensional image registration technique. Maximum lexion poses for lunging and kneeling were compared between visits with repeated-measures statistical tests. For the step-up activity, mixed-efects linear models were constructed for condylar anteroposterior (AP) contact points and tibial internal rotation throughout lexion. Estimated marginal means of itted values were plotted with 95% conidence intervals and used to compare mean kinematics between visits. Results There were no signiicant changes in maximum lunging lexion over time (p = 0.405), though signiicant increases in maximum kneeling lexion were observed between V1 (106 ± 8°) and V2 (110 ± 9°) (p = 0.006), and V1 and V3 (113 ± 9°) (p = 0.0003). While statistical diferences were calculated for lunging medial condyle AP translation and kneeling tibial internal rotation, absolute diferences in condylar AP contact locations were less than ~ 2 mm between all visits during both movements. For the step-up activity, tibial internal rotation increased with lexion, and there were pair-wise signiicant diferences at all lexion angles between V1-V2 (p < 0.001) and V1-V3 (p < 0.001). Anterior medial condylar translation was observed with lexion, with pair-wise signiicant diferences present for V1-V3 (p = 0.005) and V2-V3 (p < 0.001). The lateral condyle exhibited initial posterior translation followed by anterior translation with increasing lexion, with pair-wise diferences between all visits (p < 0.005 for all comparisons). Conclusion Though statistical diferences were observed between visits for all activities, variations in estimated mean condylar positions were within ~ 2 mm from ~ 12 weeks to 1 year. Considering measurement error averages approximately 1 mm for sagittal plane translations, these results indicate that knee kinematics during kneel, lunge, and step-up activities may be sustained from as early as 12 weeks after TKA.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Posterior cruciate-retaining total knee arthroplasty exhibits small kinematic changes in the first postoperative year

Palm-Vlasak

Smith

Harvey

et al. 2022

Knee Surg Sports Traumatol Arthrosc

Self Cite

View full text Add to dashboard Cite

show abstract

“…distance that are less than the assigned contact cutoff value. As a previous study [22][23][24] reported the average articular cartilage in 5 locations on the femoral trochlea and medial femoral condyles in the equine stifle was estimated to be 2.2 mm, with the thickness of the meniscus taken into account, the contact cutoff for the program was set at 8 mm. Individual data curves and group means were plotted for femorotibial internal/external (IE) rotation, abduction/ adduction and CrCa translations of the medial and lateral femoral condyles as well as the estimated joint contact centroids on the tibial plateau as a function of femorotibial joint extension angle.…”

Section: Kinematic Data Processingmentioning

confidence: 99%

Quantification of equine stifle passive kinematics

Palm-Vlasak

Chen

et al. 2023

ajvr

Self Cite

View full text Add to dashboard Cite

OBJECTIVE This study aims to quantitatively characterize the passive kinematics of the healthy, soft tissue-intact equine stifle to establish an objective foundation for providing insights into the etiology of stifle disorders and developing a possible surgical treatment for stifle degenerative disease. ANIMALS 5 whole-horse specimens. PROCEDURES Reflective markers with intracortical bone pins and a motion capture system were used to investigate the stifle joint kinematics. Kinematics of 5 whole-horse specimens euthanized within 2 hours were calculated for internal/external rotation, adduction/abduction, and cranial/caudal translation of the medial and lateral femoral condyles and estimated joint contact centroids as functions of joint extension angle. RESULTS From 41.7° to 121.6° (mean ± SD, range of motion: 107.5° ± 7.2°) of joint extension, 13° ± 3.7° of tibial external rotation and 6° ± 2.7° of adduction were observed. The lateral femoral condyle demonstrated significantly greater cranial translation than the medial during extension (23.7 mm ± 9.3 mm vs. 14.3 mm ± 7.0 mm, P = .01). No significant difference was found between the cranial/caudal translation of estimated joint contact centroids in the medial and lateral compartment (13.3 mm ± 7.7 mm vs. 16.4 mm ± 5.8 mm, P = .16). CLINICAL RELEVANCE The findings share similarities with kinematics for human knees and sheep and dog stifles, suggesting it may be possible to translate what has been learned in human arthroplasty to treatment for equine stifles.

show abstract

Bicompartmental Knee Arthroplasty

Ries

2022

Essentials of Cemented Knee Arthroplasty

View full text Add to dashboard Cite

Kinematics of monoblock bicompartmental knee arthroplasty during weight-bearing activities

Abstract: III.

Cited by 6 publications

References 27 publications

Posterior cruciate-retaining total knee arthroplasty exhibits small kinematic changes in the first postoperative year

Posterior cruciate-retaining total knee arthroplasty exhibits small kinematic changes in the first postoperative year

Quantification of equine stifle passive kinematics

Bicompartmental Knee Arthroplasty

Contact Info

Product

Resources

About