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Central sensitization inventory scores correlate with pain at rest in patients with hip osteoarthritis: a retrospective study.

Abstract：

BACKGROUND:Patients with persistent pain due to osteoarthritis (OA) complain of multiple symptoms that cannot be explained solely by structural changes. A poor correlation exists between structural and inflammatory changes in OA and pain levels. Central sensitization (CS) has been identified as a factor that induces chronic pain in patients with OA. Although it is important to identify osteoarthritis patients with CS components, the prevalence and characteristics of CS, especially those in patients with hip OA, are not well understood. Thus, we aimed to determine the prevalence and characteristics of CS in patients with hip OA, in this study. METHODS:The CS Inventory (CSI), used as a non-invasive routine clinical tool to evaluate the presence of CS 1 month before surgery in 100 patients with hip OA, was measured at our outpatient clinic, and the data were retrospectively reviewed. We determined the number of patients with a CSI score of 40 points or higher and assessed the relationships between the CSI score and clinical factors (including age, duration of hip pain, degree pain at rest and on activity, by using the visual analogue scale [VAS] and the Harris Hip Score) using the Spearman's correlation coefficient. RESULTS:The mean age of participants was 63.9 ± 11.6 years, and there were 15 men and 85 women. All patients had hip OA, categorised as advanced and terminal stage (Tönnis grade 2-3) on preoperative plain radiography. The mean duration of hip pain was 4.2 ± 4.4 years. The mean CSI score was 19.5 ± 11.3 and 5 (5.0%) of the patients had a score of 40 or more points. CSI scores correlated significantly only with VAS pain at rest (r = 0.348, P < 0.001). CONCLUSION:In this study, 1 out of every 20 hip OA patients had CS components. CSI scores were significantly correlated with pain at rest in hip OApatients. CS approaches to hip OA may be one of the treatment options for pain at rest.

journal_name

BMC Musculoskelet Disord

journal_title

BMC musculoskeletal disorders

authors

Ohashi Y,Fukushima K,Inoue G,Uchida K,Koyama T,Tsuchiya M,Uchiyama K,Takahira N,Takaso M

doi

10.1186/s12891-020-03630-6

subject

Has Abstract

pub_date

2020-09-05 00:00:00

pages

595

issue

issn

1471-2474

pii

10.1186/s12891-020-03630-6

journal_volume

pub_type

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Central sensitization inventory scores correlate with pain at rest in patients with hip osteoarthritis: a retrospective study.