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Popliteal cysts and subgastrocnemius bursitis are associated with knee symptoms and structural abnormalities in older adults: a cross-sectional study

Citation

Cao, Y and Jones, G and Han, W and Antony, B and Wang, X and Cicuttini, F and Ding, C, Popliteal cysts and subgastrocnemius bursitis are associated with knee symptoms and structural abnormalities in older adults: a cross-sectional study, Arthritis Research and Therapy, 16, (2) Article R59. ISSN 1478-6362 (2014) [Refereed Article]


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Copyright Statement

Copyright 2014 The Authors-This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0 AU)(http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

DOI: doi:10.1186/ar4496

Abstract

Introduction:The role of popliteal cysts and subgastrocnemius bursitis in knee joint homeostasis is uncertain. The aim of this study is to describe cross-sectional associations between popliteal cysts, subgastrocnemius bursitis, knee symptoms and structural abnormalities in older adults.Methods:A cross-sectional sample of 900 randomly-selected subjects (mean age 63 years, 48% female) were studied. Knee pain, stiffness and dysfunction were assessed by self-administered Western Ontario McMaster Osteoarthritis Index (WOMAC) questionnaire. Radiographic knee osteophyte and joint space narrowing (JSN) were recorded. Magnetic resonance imaging (MRI) was utilized to assess popliteal cysts, subgastrocnemius bursitis, cartilage defects and bone marrow lesions (BMLs).Results:Popliteal cysts were present in 11.7% and subgastrocnemius bursitis in 12.7% of subjects. Subgastrocnemius bursitis was more common in those with popliteal cyst (36.2% versus 9.7%, P <0.01). In multivariable analyses, popliteal cysts were significantly associated with increased osteophytes in both medial and lateral tibiofemoral compartments while subgastrocnemius bursitis was associated with increased osteophytes and JSN in the medial tibiofemoral compartment. Both were significantly associated with cartilage defects in all compartments, and with BMLs in the medial tibiofemoral compartment. Furthermore, both popliteal cysts and subgastrocnemius bursitis were significantly associated with increased weight-bearing knee pain but these associations became non-significant after adjustment for cartilage defects and BMLs.Conclusions:Popliteal cysts and subgastrocnemius bursitis are associated with increased symptoms as well as radiographic and MRI-detected joint structural abnormalities. Longitudinal data will help resolve if they are a consequence or a cause of knee joint abnormalities. © 2014 Cao et al.; licensee BioMed Central Ltd.

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Clinical Sciences
Research Field:Rheumatology and Arthritis
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Skeletal System and Disorders (incl. Arthritis)
Author:Cao, Y (Associate Professor Yue long Cao)
Author:Jones, G (Professor Graeme Jones)
Author:Han, W (Dr Weiyu Han)
Author:Antony, B (Mr Benny Eathakkattu Antony)
Author:Wang, X (Ms Xia Wang)
Author:Ding, C (Professor Chang-Hai Ding)
ID Code:91349
Year Published:2014
Web of Science® Times Cited:2
Deposited By:Menzies Institute for Medical Research
Deposited On:2014-05-14
Last Modified:2017-11-02
Downloads:166 View Download Statistics

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