scholarly journals Early changes in sagittal plane knee biomechanics after total knee arthroplasty

2013 ◽  
Vol 21 ◽  
pp. S88-S89
Author(s):  
E.M. Debbi ◽  
B. Bernfeld ◽  
E. Gray ◽  
M. Salai ◽  
Y. Levy ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Sagittal Plane ◽  
Knee Biomechanics ◽  
Total Knee

scholarly journals Improved knee biomechanics among patients reporting a good outcome in knee-related quality of life one year after total knee arthroplasty

2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Josefine E. Naili ◽  
Per Wretenberg ◽  
Viktor Lindgren ◽  
Maura D. Iversen ◽  
Margareta Hedström ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Biomechanics ◽  
Good Outcome ◽  
Related Quality ◽  
Total Knee ◽  
One Year

Quantifying Achievable Levels of Improvement in Knee Joint Biomechanics During Gait After Total Knee Arthroplasty Relative to Osteoarthritis Severity

2020 ◽  
pp. 1-9
Author(s):  
Jereme B. Outerleys ◽  
Michael J. Dunbar ◽  
Glen Richardson ◽  
Cheryl L. Hubley-Kozey ◽  
Janie L. Astephen Wilson
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Frontal Plane ◽  
Knee Adduction Moment ◽  
Patient Specific ◽  
Knee Biomechanics ◽  
Knee Oa ◽  
Joint Biomechanics ◽  
Total Knee

Total knee arthroplasty (TKA) surgery improves knee joint kinematics and kinetics during gait for most patients, but a lack of evidence exists for the level and incidence of improvement that is achieved. The objective of this study was to quantify patient-specific improvements in knee biomechanics relative to osteoarthritis (OA) severity levels. Seventy-two patients underwent 3-dimensional (3D) gait analysis before and 1 year after TKA surgery, as well as 72 asymptomatic adults and 72 with moderate knee OA. A combination of principal component analysis and discriminant analyses were used to categorize knee joint biomechanics for patients before and after surgery relative to asymptomatic, moderate, and severe OA. Post-TKA, 63% were categorized with knee biomechanics consistent with moderate OA, 29% with severe OA, and 8% asymptomatic. The magnitude and pattern of the knee adduction moment and angle (frontal plane features) were the most significant contributors in discriminating between pre-TKA and post-TKA knee biomechanics. Standard of care TKA improves knee biomechanics during gait to levels most consistent with moderate knee OA and predominately targets frontal plane features. These results provide evidence for the level of improvement in knee biomechanics that can be expected following surgery and highlight the biomechanics most targeted by surgery.

Differential Effect of Total Knee Arthroplasty on Valgus and Varus Knee Biomechanics During Gait

2016 ◽  
Vol 31 (9) ◽  
pp. 248-253 ◽  
Author(s):  
Jose A. Rodriguez ◽  
Marcel A. Bas ◽  
Karl F. Orishimo ◽  
Jonathan Robinson ◽  
Stephen J. Nicholas
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Differential Effect ◽  
Knee Biomechanics ◽  
Varus Knee ◽  
Total Knee

scholarly journals Accelerometer-Based Navigation in Total Knee Arthroplasty for the Management of Extra-Articular Deformity and Retained Femoral Hardware: Analysis of Component Alignment

Joints ◽  
2019 ◽  
Vol 07 (01) ◽  
pp. 001-007 ◽  
Author(s):  
Andrea Cozzi Lepri ◽  
Matteo Innocenti ◽  
Fabrizio Matassi ◽  
Marco Villano ◽  
Roberto Civinini ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Navigation System ◽  
Lower Limb ◽  
Sagittal Plane ◽  
Frontal Plane ◽  
Control Group ◽  
Navigation Systems ◽  
Level Of Evidence ◽  
Total Knee

Abstract Purpose Recent advances in total knee arthroplasty (TKA) include an accelerometer portable system designed to improve component position and alignment. The purpose of this study is to evaluate whether accelerometer navigation system can be a valuable option in complex TKAs for extra-articular deformity of the lower limb or in case of retained femoral hardware. Methods A group of 13 patients underwent TKA with an accelerometer navigation system. Three patients had a tibial extra-articular deformity, six had a femoral extra-articular deformity, and four had an intramedullary nail in the femur. Preoperative and postoperative mechanical axes were measured from full-length lower extremity radiographs to evaluate alignment. The alignment of prosthetic components in the frontal and sagittal planes was determined by postoperative radiographs. Results At 30-days postoperative radiographic check, the hip knee ankle angle was within 2.0° (0 ± 1) of the neutral mechanical axis. The alignment of the tibial component on the frontal plane was 90.0° (range 89–91) and on the sagittal plane 5.0° (range 3–7). The alignment of the femoral component on the frontal plane was 90.0° (range 89–91) and on the sagittal plane 3.0° (range 0–5). Conclusion The alignment of the prosthetic components has been accurate and comparable to other navigation systems in literature without any increase in surgical times. The accelerometer-based navigation system is therefore a useful technique that can be used to optimize TKA alignment in patients with extra-articular deformity or with lower limb hardware, where the intramedullary guides cannot be applied. Level of Evidence This is an observational study without a control group, Level III.

Knee Biomechanics and Contralateral Knee Osteoarthritis Progression after Total Knee Arthroplasty

2021 ◽  
Author(s):  
Moiyad Saleh Aljehani ◽  
Jesse C. Christensen ◽  
Lynn Snyder-Mackler ◽  
Jeremy Crenshaw ◽  
Allison Brown ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Osteoarthritis ◽  
Knee Arthroplasty ◽  
Knee Biomechanics ◽  
Contralateral Knee ◽  
Osteoarthritis Progression ◽  
Total Knee

Sagittal plane positioning of the femoral component in total knee arthroplasty

1988 ◽  
Vol 3 (4) ◽  
pp. 355-358 ◽  
Author(s):  
Philip M. Faris ◽  
Merrill A. Ritter ◽  
E. Michael Keating
Keyword(s):  
Total Knee Arthroplasty ◽  
Femoral Component ◽  
Knee Arthroplasty ◽  
Sagittal Plane ◽  
Total Knee

The Effect of Cement Viscosity in Total Knee Arthroplasty

2012 ◽  
Author(s):  
Kevin Abbruzzese ◽  
Richard O’Laughlin ◽  
Daniel Lee ◽  
D. Gordon Allan ◽  
Manish Paliwal
Keyword(s):  
Total Knee Arthroplasty ◽  
Aseptic Loosening ◽  
Knee Arthroplasty ◽  
Evaluation System ◽  
Sagittal Plane ◽  
Mechanical Tests ◽  
Lateral View ◽  
Superior Performance ◽  
Posterior View ◽  
Total Knee

Aseptic loosening of the tibial implant remains one of the major reasons of failure in Total Knee Arthroplasty (TKA). Currently, there is no consensus on the role that cement viscosity at the time of application to the bone plays in ensuring the long-term success of the arthroplasty. The purpose of this study was to investigate the relationship between cement viscosity and aseptic loosening of tibial implants. Three cements (Depuy 2, Palacos R (high viscosity cements) and Simplex-P, a medium viscosity cement) were compared during TKA through radiographic analysis and mechanical loading tests using surrogate tibia. Cement penetration was measured from radiographs of the constructs and analyzed according to the Knee Society Total Knee Arthroplasty Roentgenographic Evaluation System. Simplex-P had the maximum cumulative penetration in seven zones in the mediolateral view, and three zones in antero-posterior view. Simplex exhibited maximum penetration in zone 7 in the antero-posterior view, and in zone 3 in the lateral view. For the mechanical tests the TKA constructs were subjected to cyclic compressive loading in the sagittal plane. Simplex-P had the smallest micro-motion in sagittal plane, the results were significant when compared to Palacos R. The consistently superior performance of Simplex-P suggests that cement viscosity does indeed play a role in arthroplasty success. These results have direct clinical relevance for TKA patients suffering from aseptic loosening.

Sign in / Sign up

Export Citation Format

Share Document