Influence of Patella Thickness on Patellofemoral Pressure in Total Knee Arthroplasty

Tanikawa, Hidenori; Tada, Minoru; Ogawa, Ryō; Harato, Kengo; Niki, Yasuo; Kobayashi, Shū; Nagura, Takeo

doi:10.21203/rs.3.rs-100156/v1

Cited by 2 publications

(2 citation statements)

References 16 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The abnormal patellofemoral position can cause anterior knee pain, limited ROM of knee, joint instability, and patellofemoral clunk syndrome after TKA. [13] The rate of abnormal position of the patella is 11.0-26.4% after TKA [14][15][16][17] . In this study of 171 consecutive cases enrolled after TKA, the rate of patella baja was 17.0%, and the rate of patella alta after surgery was 5.8%.…”

Section: Discussionmentioning

confidence: 99%

Influence of Patella Height on Knee Joint Function after Total Knee Arthroplasty: A Retrospective Study

Shi

Liao

et al. 2023

Preprint

View full text Add to dashboard Cite

Purpose: The aim of this study was to explore the correlation between the change of patella height and postoperative functional outcomes, range of motion, and patellar crepitus after total knee arthroplasty. Materials and methods: Analysis of an observational, retrospective case series was conducted on 116 patients suffering total knee arthroplasty in the Department of Orthopedics from August 2020 to September 2022. According to the mBP ratio of postoperation, the patients were divided into normal patella height, patella baja, and patella alta groups. The primary conditions, KSS, range of motion of keen, and patellar crepitus were collected from the patients in each group during follow-up. Outcome assessors were blinded to the groups during the study. Results: There was no significant difference in the knee score of KSS among the groups (P = 0.024); the patella baja group significantly differed in the range of motion compared to the normal patella group (P = 0.037); a statistically significant difference existed in the patella baja group and the normal patella group for the patellar crepitus (P < 0.001); Conclusion: In the patients who underwent the total knee arthroplasty without patella replacement, it was found that abnormal patella position had no significant influence on postoperative KSS, but patella baja seemed to reduce the postoperative range of motion, and increase the rate of patella crepitus.

show abstract

Section: Discussionmentioning

confidence: 99%

Influence of Patella Height on Knee Joint Function after Total Knee Arthroplasty: A Retrospective Study

Shi

Liao

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Increasing patella thickness in uences patellofemoral pressure in TKA and the pressure was greatest at 90 degrees of knee exion, and a two mm increase or decrease resulted in a 20% increase or decrease of patellofemoral pressure [17]. The increased patellofemoral pressure in thicker components could also have an in uence on the loosening rate of those buttons.…”

Section: Discussionmentioning

confidence: 99%

Patella component diameters of 38 mm and up might be associated with higher revision rates after patella resurfacing.

Jungwirth-Weinberger

Rüeckl

Bechler

et al. 2022

Preprint

View full text Add to dashboard Cite

Purpose Patellar resurfacing in Total knee arthroplasty is considered standard in the United States. Complications of patella resurfacing include aseptic loosening or patella fractures possibly resulting in loss of the extensor mechanism. The goal of this study was to evaluate the Genesis II patella button and to report its outcome and complications. Material & Methods Between 01/2010 and 08/2016 the Genesis II patella button was implanted in 1,056 patients (267 men and 550 women) by the senior author at the authors’ institution as part of a posterior stabilized total knee arthroplasty. Results Of 1,056 cases 35 cases (14 women, 15 men, 5 bilateral, 3.3%) showed early loosening of the Genesis patella button at a mean 52.5 months postoperatively. Buttons of 38mm and larger patella components showed a significantly higher loosening rate than the 29, 32, 35mm buttons (p<0.01). Mean BMI of patients identified with aseptic loosening was 31.7kg/m2, mean age at time of revision surgery was 63.3 years. All of the patients with loosening of the patella button required revision surgery; in 33 cases an exchange of the button was performed, in two cases a removal of the button and patellar bone grafting was indicated. No complications occurred after revision surgery. Conclusion The current study reports a 3.3% patella loosening rate in the short follow up for the Genesis II patella button. Button 35mm and larger showed a significantly higher revision rate than smaller buttons and the authors advise caution when using large diameter patella components.

show abstract

Influence of Patella Thickness on Patellofemoral Pressure in Total Knee Arthroplasty

Cited by 2 publications

References 16 publications

Influence of Patella Height on Knee Joint Function after Total Knee Arthroplasty: A Retrospective Study

Influence of Patella Height on Knee Joint Function after Total Knee Arthroplasty: A Retrospective Study

Patella component diameters of 38 mm and up might be associated with higher revision rates after patella resurfacing.

Contact Info

Product

Resources

About