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Erschienen in: European Radiology 11/2018

30.04.2018 | Musculoskeletal

Tibial tuberosity to trochlear groove distance and its association with patellofemoral osteoarthritis-related structural damage worsening: data from the osteoarthritis initiative

verfasst von: Arya Haj-Mirzaian, Ali Guermazi, Michael Hakky, Christopher Sereni, Bashir Zikria, Frank W. Roemer, Miho J. Tanaka, Andrew J. Cosgarea, Shadpour Demehri

Erschienen in: European Radiology | Ausgabe 11/2018

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Abstract

Objectives

To determine whether the tibial tuberosity-to-trochlear groove (TT-TG) distance is associated with concurrent patellofemoral joint osteoarthritis (OA)-related structural damage and its worsening on 24-month follow-up magnetic resonance imaging (MRI) in participants in the Osteoarthritis Initiative (OAI).

Methods

Six hundred subjects (one index knee per participant) were assessed. To evaluate patellofemoral OA-related structural damage, baseline and 24-month semiquantitative MRI Osteoarthritis Knee Score (MOAKS) variables for cartilage defects, bone marrow lesions (BMLs), osteophytes, effusion, and synovitis were extracted from available readings. The TT-TG distance was measured in all subjects using baseline MRIs by two musculoskeletal radiologists. The associations between baseline TT-TG distance and concurrent baseline MOAKS variables and their worsening in follow-up MRI were investigated using regression analysis adjusted for variables associated with tibiofemoral and patellofemoral OA.

Results

At baseline, increased TT-TG distance was associated with concurrent lateral patellar and trochlear cartilage damages, BML, osteophytes, and knee joint effusion [cross-sectional evaluations; overall odds ratio 95% confidence interval (OR 95% CI): 1.098 (1.045–1.154), p < 0.001]. In the longitudinal analysis, increased TT-TG distance was significantly related to lateral patellar and trochlear cartilage, BML, and joint effusion worsening (overall OR 95% CI: 1.111 (1.056–1.170), p < 0.001).

Conclusions

TT-TG distance was associated with simultaneous lateral patellofemoral OA-related structural damage and its worsening over 24 months. Abnormally lateralized tibial tuberosity may be considered as a risk factor for future patellofemoral OA worsening.

Key Points

Excessive TT-TG distance on MRI is an indicator/predictor of lateral-patellofemoral-OA.
TT-TG is associated with simultaneous lateral-patellofemoral-OA (6–17% chance-increase for each millimeter increase).
TT-TG is associated with longitudinal (24-months) lateral-patellofemoral-OA (5–15% chance-increase for each millimeter).
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Metadaten
Titel
Tibial tuberosity to trochlear groove distance and its association with patellofemoral osteoarthritis-related structural damage worsening: data from the osteoarthritis initiative
verfasst von
Arya Haj-Mirzaian
Ali Guermazi
Michael Hakky
Christopher Sereni
Bashir Zikria
Frank W. Roemer
Miho J. Tanaka
Andrew J. Cosgarea
Shadpour Demehri
Publikationsdatum
30.04.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
European Radiology / Ausgabe 11/2018
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-018-5460-9

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