ArticleArchives of orthopaedic and trauma surgery2020
Preoperative patellofemoral anatomy affects failure rate after isolated patellofemoral inlay arthroplasty.
Article in Archives of orthopaedic and trauma surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 3 of them syntheses that pooled it.
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Who cites it
14 citing papers in PubMed, 3 syntheses or guidelines pooled it, 25 citations in OpenAlex.
- [Guideline for the treatment of patellofemoral cartilage defects/arthrosis].Orthopadie (Heidelberg, Germany) · 2025Guideline
- Patellofemoral arthroplasty with onlay prosthesis leads to higher rates of osteoarthritis progression than inlay design implants: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Pooled it
- Midterm results of modern patellofemoral arthroplasty versus total knee arthroplasty for isolated patellofemoral arthritis: systematic review and meta-analysis of comparative studies.Archives of orthopaedic and trauma surgery · 2022Pooled it
- Peg Shearing as a Method of Failure in Highly Cross-Linked Polyethylene Patellar Components Used in Patellofemoral Arthroplasty.Arthroplasty today · 2026Article
- A two to fifteen year follow-up case series of ninety one patients after onlay patellofemoral arthroplasty highlighting the impact of preoperative symptoms and mental health.International orthopaedics · 2026Article
- Evaluation of Reference Values for the Patellotrochlear Index in the North Indian Population: A Cross-sectional Magnetic Resonance Imaging-based Study.Annals of African medicine · 2026Article
- Patellofemoral arthroplasty in isolated Iwano grade IV patellofemoral osteoarthritis: 86% 10-year survival.Journal of experimental orthopaedics · 2025Article
- [Patellofemoral joint replacement: onlay or inlay?]Orthopadie (Heidelberg, Germany) · 2025Article
- [Why does the patellofemoral cartilage collapse? : A critical analysis of epidemiology, etiology and prevention].Orthopadie (Heidelberg, Germany) · 2025Review
- Improved clinical outcomes and a low rate of failure following implantation of a patellofemoral inlay arthroplasty model featuring an enlarged lateral offset - a prospective clinical and radiographic evaluation at short term follow-up.Archives of orthopaedic and trauma surgery · 2025Article
- Revision of inlay resurfacing prosthesis with patellar realignment surgery and a new inlay prosthesis for persistent patellofemoral pain und patella subluxation.Archives of orthopaedic and trauma surgery · 2023Article
- PATELLOFEMORAL KNEE PROSTHESIS - WHY IS IT RARELY USED?Acta clinica Croatica · 2023Review
- Article
- The distal femur trochlear groove appears to compensate for tibial deformity but not femoral deformity in an investigation of five-hundred and seventy-nine cadaveric skeletons.Archives of orthopaedic and trauma surgery · 2022Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo analyze whether preoperative patellofemoral anatomy is associated with clinical improvement and failure rate after isolated patellofemoral arthroplasty (PFA) using a modern inlay-type trochlear implant.
methodsProspectively collected 24 months data of patients treated with isolated inlay PFA (HemiCAP
resultsA total of 41 patients (61% female) with a mean age of 48 ± 13 years could be included. Fifteen patients (37%) were considered failures, with 5 patients (12%) revised to TKA and 10 patients (24%) not achieving MCID for WOMAC total or VAS pain. Failures had a significantly higher ISI, and a significantly lower PTI. Furthermore, the proportion of patients with a pathologic ISI (> 1.2), a pathologic PTI (< 0.28), and without trochlear dysplasia were significantly higher in failures. Significantly greater improvements in clinical outcome scores were observed in patients with a higher preoperative grade of patellofemoral OA, ISI ≤ 1.2, PTI ≥ 0.28, TT-PCL distance ≤ 21 mm, and a dysplastic trochlea.
conclusionPreoperative patellofemoral anatomy is significantly associated with clinical improvement and failure rate after isolated inlay PFA. Less improvement and a higher failure rate must be expected in patients with patella alta (ISI > 1.2 and PTI < 0.28), absence of trochlear dysplasia, and a lateralized position of the tibial tuberosity (TT-PCL distance > 21 mm). Concomitant procedures such as tibial tuberosity transfer may, therefore, be considered in such patients. LEVEL OF EVIDENCE: Level III, retrospective analysis of prospectively collected data.
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