ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2014
Evidence of trochlear dysplasia in patellofemoral arthroplasty designs.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
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Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- No bias for developer publications and no difference between first-generation trochlear-resurfacing versus trochlear-cutting implants in 15,306 cases of patellofemoral joint arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Pooled it
- Clinical and radiologic outcomes of two patellar resection techniques during total knee arthroplasty: a prospective randomized controlled study.International orthopaedics · 2019Trial
- Effects of a novel externally rotated trochlear design on patellofemoral kinematics in total knee arthroplasty: A cadaveric study.Journal of experimental orthopaedics · 2025Article
- Does contemporary total knee designs replicate the anatomy of the native trochlea?European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024Article
- Gender-related morphological differences in sulcus angle and condylar height for the femoral trochlea using magnetic resonance imaging.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- The evolution of patellofemoral prosthetic design in total knee arthroplasty: how far have we come?EFORT open reviews · 2019Review
- Early outcomes of an anatomic trochlear-cutting patellofemoral arthroplasty: patient selection is key.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- Inadequacy of computed tomography for pre-operative planning of patellofemoral arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Article
- The need for secondary resurfacing is affected by trochlear height in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Stress distribution of the patellofemoral joint in the anatomic V-shape and curved dome-shape femoral component: a comparison of resurfaced and unresurfaced patellae.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Evolution of trochlear compartment geometry in total knee arthroplasty.Annals of translational medicine · 2016Article
- Rediscovering the patellofemoral joint.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe design of the trochlear compartment is crucial in patellofemoral arthroplasty (PFA), because 78% of patients with isolated patellofemoral arthritis present concomitant trochlear dysplasia with patellar maltracking and therefore remain predisposed to post-operative patellar subluxation and dislocation. The study investigated whether current PFA implants are designed with anatomic trochlear parameters such as the sulcus angle, lateral facet height and groove orientation.
methodsFive trochlear components of commercially available PFA implants were scanned, and the generated three-dimensional surfaces were measured using engineering design software. The mediolateral trochlear profiles were plotted at various flexion angles (0°, 15°, 30° and 45°) to deduce the following variables: sulcus angle, height of lateral facet and trochlear groove orientation.
resultsFour specimens had sulcus angle>144° in the 45° of flexion, and all five specimens had sulcus angle>143° in 30° of flexion. Three specimens had a facet<5 mm high through the entire range of early flexion (0°-30°), and two specimens had a facet<5 mm high beyond early flexion (30°-45°). The trochlear groove was oriented laterally in all specimens (range 1.6°-13.5°).
conclusionCurrent PFA trochlear components are not always designed with anatomic parameters, and some models exhibit characteristics of trochlear dysplasia. Surgeons are therefore advised to implant components with a deep sulcus, particularly in patients with history of patellofemoral disorders, and to adapt the surgical technique and extensor mechanism if the component implanted has a shallow sulcus, to ensure normal patellar tracking. LEVEL OF EVIDENCE: III.
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