The Effect of Patellar Tendon Release on the Characteristics of Patellofemoral Joint Squat Movement: A Simulation Analysis

Wang, Jianping; Yang, Yongqiang; Guo, Dong; Wang, Shihua; Fu, Long Tai; Li, Yu

doi:10.3390/app9204301

Cited by 3 publications

(4 citation statements)

References 38 publications

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“…Therefore, in this special issue some stimulating contributions are proposed for their valuable applications into the pre-operative field, focusing on modern simulation methods and 3D imaging tools for surgical planning, prediction methodologies [22,23] and data acquisition by means of novel wearable devices [24].…”

Section: About the Present Issuementioning

confidence: 99%

Engineering-Aided Inventive Surgery

2020

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This Editorial presents a new Special Issue dedicated to some old and new interdisciplinary areas of cooperation between engineering and surgery. The first two sections offer some food for thought, in terms of a brief introductory and general review of the past, present, future and visionary perspectives of the synergy between engineering and surgery. The last section presents a very short and reasoned review of the contributions that have been included in the present Special Issue. Given the vastness of the topic that this Special Issue deals with, we hope that our effort may have offered a stimulus, albeit small, to the development of cooperation between engineering and surgery.

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Section: About the Present Issuementioning

confidence: 99%

Engineering-Aided Inventive Surgery

2020

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“…That is, a force perpendicular to the ground 300N is applied at the center of the femoral head. The establishment of the above model and coordinate system, the setting of loading conditions and material properties are derived from the previously published papers [12].…”

Section: Loading Conditions and The Setting Of Materials Propertiesmentioning

confidence: 99%

“…Table.2 Flexion degree before and after releasing at 100-140 degree of the same translation Figure 3 A sample of simulation states after TKA. Flexion degrees: (a) 0° (b) 30° (c) 90° (d) 135° [12].…”

Section: Ethics Approval and Consent To Participatementioning

confidence: 99%

“…same translation, BR means before release, AR means after release, AI means average increase, and TA means total average. AI=AR-BR, TA= [S (AI)]/5.Table.3 Whether the released models were favorable to the exion (100°-120°and after 120°) the exion motion is unfavorable after releasing, and + indicates that the exion motion is favorable after releasingTable.4 Changes in exion of patellar tendon after patellar tendon release 3D geometric anatomical model of knee joint after TKA; (b) nite element model of knee joint after TKA[12].…”

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Effect of patellar tendon release on squatting characteristics of tibiofemoral joint after total knee arthroplasty: a simulation analysis

Wang

Yang

et al. 2020

Preprint

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BackgroundThe objective of this paper was to study the patellar tendon release’s effect on the squat movement characteristics of the tibiofemoral joint after TKA (total knee arthroplasty).MethodsThe dynamic FEM(finite element model) of the human knee joint with 30% release of the upper end, lower end and both ends of the patellar tendon after TKA was established respectively, and the knee tibiofemoral joint of the squat movement simulation analysis.ResultsThe results of simulation show that in the release of three different parts, comparing with the results of no release simulation, the average of lateral translation, superior translation, posterior translation, and the adduction of the femur relative to the tibia decreased by 20%, 17%, 17%, and 12%, respectively.ConclusionThe average of external rotation of the femur relative to the tibia increased 24%. By comparing the data after patellar tendon release and no release one, it can be concluded that the flexion degree of femur relative to the tibia was 4° on average more than no release. Moderate release of the patellar tendon during TKA surgery is beneficial to improve the range of motion (ROM) of the femur relative to the tibia.

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Rapid Screening of Retrieved Knee Prosthesis Components by Confocal Raman Micro-Spectroscopy

et al. 2020

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(1) Aim: To evaluate the failure reason and surface modifications of a retrieved knee prosthesis; (2) Methods: Rapid confocal Raman spectroscopy screening was applied on the surface of a retrieved knee prosthesis (both titanium and UHMWPE (Ultra-high-molecular-weight polyethylene) component) in order to determine predominate implant damage, along with the chemical composition of synovial fluid accumulated in the stem of the tibial component during the implantation period. Correlations between the medical records of the patient (clinical and radiographic information) and spectroscopic results are pointed out, the parameters being interpreted in the context of proper functioning and life span of knee prosthesis; (3) Results: The metallic tibial component does not show any modification during the implantation period, as demonstrated by the well preserved titanium component with signature of anatase phase detected in retrieved component, compared to unused piece. The spectral features of polymeric component (ultrahigh molecular weight polyethylene, UHMWPE) revealed structural modification in crystallinity and amorphous phase accompanied by insignificant level of oxidation (OI < 1). Scratching, pitting and persistent organic spots as a result of mechanical and chemical deterioration were noticed on the surface of retrieved insert. Acrylic cement deterioration was also noticed. Synovial fluid collected from the stem of the tibial component demonstrated a lipidomic profile; (4) Conclusions: Combining the clinical evidences with confocal Raman spectroscopy allowed a rapid screening with high sensitivity and nondestructive measurements in the case of failure in TKA (total knee arthroplasty). The third body wear and lipidomic profile of synovial fluid are cumulative factors of failure in this case, resulting in an osteolysis that finally leads to an aseptic loosening.

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The Effect of Patellar Tendon Release on the Characteristics of Patellofemoral Joint Squat Movement: A Simulation Analysis

Cited by 3 publications

References 38 publications

Engineering-Aided Inventive Surgery

Engineering-Aided Inventive Surgery

Effect of patellar tendon release on squatting characteristics of tibiofemoral joint after total knee arthroplasty: a simulation analysis

Rapid Screening of Retrieved Knee Prosthesis Components by Confocal Raman Micro-Spectroscopy

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