ArticleEuropean radiology2015
Increased signal intensity at the proximal patellar tendon: correlation between MR imaging and histology in eight cadavers and clinical MR imaging studies.
Article in European radiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Bilateral Achilles Tendon Xanthomas in a 17-Year-Old Female: A Clinicoradiological Case Report.Clinical medicine insights. Case reports · 2026Article
- Association between increased signal intensity at the proximal patellar tendon and patellofemoral geometry in community-based asymptomatic middle-aged adults: a cross-sectional study.BMC musculoskeletal disorders · 2020Article
- Tissue-Specific TJournal of magnetic resonance imaging : JMRI · 2020Article
- Increased signal in the proximal patellar tendon: normal or pathologic?Skeletal radiology · 2019Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesWe set out to investigate the cause of persistently increased signal intensity (SI) in the posterior portion of the proximal patellar tendon (pPT) on T1-weighted images (T1WI).
methodsMR imaging was performed in eight cadavers, followed by gross histological examination. In addition, 84 patients without trauma history or anterior knee pain were included to compare the SI of the PTs. The patients were divided according to their age, sex, and Kellgren-Lawrence (KL) grades. The length and thickness of the increased SI portion in the pPT and whole PT (wPT) on T1WI were recorded.
resultsHistological specimens demonstrated that the adipose tissue, vessels, and perivascular connective tissue invaginated into the posterior portion of the pPT. This histological anatomy corresponded to the pPT signal change on MR imaging. There was linear and interdigitating increased SI of the pPT in all of the 84 patients (100%). There were no differences in the lengths and thicknesses of the increased SI portion of pPTs and wPTs according to age, sex, and KL grade (all p > 0.05).
conclusionsThe increased SI of the pPT on T1WI and fluid-sensitive MR images results from invaginating fat, vessels, and perivascular connective tissue. It is not pathological, but a normal and common finding. KEY POINTS: • Increased linear/interdigitated SIs of the pPT is a normal and common finding. • Invaginated adipose tissue, vessels, and connective tissue could contribute to increased SI. • The fibrocartilage has a minimal role in increased SI of the pPT. • Age, sex, and KL grade do not significantly influence the increased SI. • Knowledge of this increased SI should help clinicians to avoid unnecessary treatment.
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Registered trials
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