ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2017
Stress distribution of the patellofemoral joint in the anatomic V-shape and curved dome-shape femoral component: a comparison of resurfaced and unresurfaced patellae.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 32 citations in OpenAlex.
- A finite element analysis of patellofemoral joint biomechanics: Exploring potential causes of postoperative anterior knee pain following unicompartmental knee arthroplasty.Journal of orthopaedics · 2025Article
- Functional and radiological outcomes of total knee arthroplasty using posterior-stabilized U2 knee system: A retrospective study in 560 cases at five years of follow-up.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024Article
- Factors that impact the patellofemoral contact stress in the TKA: a review.Arthroplasty (London, England) · 2023Review
- Patellar management during total knee arthroplasty: a review.EFORT open reviews · 2021Review
- The patellofemoral morphology and the normal predicted value of tibial tuberosity-trochlear groove distance in the Chinese population.BMC musculoskeletal disorders · 2021Article
- Gender differences in femoral trochlea morphology.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Article
- Effect on patellar kinematics of the different patellar component designs in total knee arthroplasty: intraoperative measurement of dome type versus anatomic type.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2020Article
- The evolution of patellofemoral prosthetic design in total knee arthroplasty: how far have we come?EFORT open reviews · 2019Review
- Patellofemoral design enhancements reduce long-term complications of postero-stabilized total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- Evaluation of the Effect of the Sulcus Angle and Lateral to Medial Facet Ratio of the Patellar Groove on Patella Tracking in Aging Subjects with Stable Knee Joint.BioMed research international · 2018Article
- Sagittal plane tilting deformity of the patellofemoral joint: a new concept in patients with chondromalacia patella.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Does patellofemoral congruence following total knee arthroplasty correlate with pain or function? Intraoperative arthroscopic assessment of 30 cases.Annals of translational medicine · 2016Article
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Authors and funding
8 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeWhether to resurface the patella in knee replacement remains a controversial issue. The geometrical design of the trochlear groove in the femoral component could play an important role in determining the stress distribution on the patellofemoral joint, but this has not been sufficiently reported on. This study attempted to determine the effect of implant design on contact mechanics by means of a finite element method.
methodsTwo designs, an anatomical V-shape design (VSD) and a dome-shape design (DSD), for the anterior trochlear surface in a contemporary femoral component were chosen for examining the contact characteristics. The use and absence of patella resurfacing was simulated. The stress and strain distribution on the patellar bone and the polyethylene component were calculated for comparison.
resultsWithout patellar resurfacing, the maximal compressive strain in the patellar bone in the VSD model was about 20 % lower than the DSD model. On the other hand, with resurfacing, the maximal strain for the VSD model was 13.3 % greater than for DSD. Uneven stress distribution at the bone-implant interface was also noted for the two designs.
conclusionThe femoral component with a V-shape trochlear groove reduced the compressive strain on the unresurfaced patella. If resurfacing the patella, the femoral component with a curved domed-shape design might reduce the strain in the remaining patellar bone. Uneven stress could occur at the bone-implant interface, so design modifications for improving fixation strength and medialization of the patellar button would be helpful in reducing the risk of peg fracture or loosening. LEVEL OF EVIDENCE: III.
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