Ultrasound imaging in patients with hip pain and suspected hip osteoarthritis: an inter-rater and intra-rater reliability study
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Ultrasound imaging in patients with hip pain and suspected hip osteoarthritis : an inter-rater and intra-rater reliability study. / Clausen, Stine; Kjær, Søren; Fredberg, Ulrich; Terslev, Lene; Hartvigsen, Jan; Arnbak, Bodil.
I: BMJ Open, Bind 10, Nr. 11, e038643, 2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Ultrasound imaging in patients with hip pain and suspected hip osteoarthritis
T2 - an inter-rater and intra-rater reliability study
AU - Clausen, Stine
AU - Kjær, Søren
AU - Fredberg, Ulrich
AU - Terslev, Lene
AU - Hartvigsen, Jan
AU - Arnbak, Bodil
PY - 2020
Y1 - 2020
N2 - OBJECTIVES: The objectives of this study were to asses (1) inter-rater and intrarater reliability of ultrasound imaging in patients with hip osteoarthritis, and (2) agreement between ultrasound and X-ray findings of hip osteoarthritis using validated Outcome Measures in Rheumatology ultrasound definitions for pathology. DESIGN: An inter-rater and intrarater reliability study. SETTING: A single-centre study conducted at a regional hospital. PARTICIPANTS: 50 patients >39 years of age referred for radiography due to hip pain and suspected hip osteoarthritis were included. Exclusion criteria were previous hip surgery in the painful hip, suspected fracture or malignant changes in the hip. INTERVENTION: Bilateral ultrasound examinations (n=92) were performed continuously by two experienced operators blinded to clinical information and other imaging findings. After 4-6 weeks, one operator reassessed the images. X-rays were assessed by a third imaging specialist. PRIMARY AND SECONDARY OUTCOME MEASURES: Inter-rater and intrarater reliability and agreement between ultrasound imaging and X-ray were assessed using Cohen's ordinal kappa statistics for binary categorical variables and weighted kappa for ordered categorical variables. RESULTS: Kappa values (κ) for inter-rater reliability were 0.9 and 0.8 for hip effusion/synovitis and osteoarthritis grading, respectively. For acetabular and femoral osteophytes, femoral cartilage changes and labrum changes κ ranged from 0.4 to 0.7. Intrarater reliability had κ equal or higher compared with inter-rater reliability. Agreement between ultrasound and X-ray findings ranged from κ=0.2 to κ=0.5. CONCLUSION: This study demonstrated substantial to almost perfect reliability on the most common ultrasound findings related to hip osteoarthritis and osteoarthritis grading. Agreement on the grade of osteoarthritis between ultrasound and X-ray was moderate. Overall, these results support ultrasound imaging as a reliable tool in the assessment of hip osteoarthritis.
AB - OBJECTIVES: The objectives of this study were to asses (1) inter-rater and intrarater reliability of ultrasound imaging in patients with hip osteoarthritis, and (2) agreement between ultrasound and X-ray findings of hip osteoarthritis using validated Outcome Measures in Rheumatology ultrasound definitions for pathology. DESIGN: An inter-rater and intrarater reliability study. SETTING: A single-centre study conducted at a regional hospital. PARTICIPANTS: 50 patients >39 years of age referred for radiography due to hip pain and suspected hip osteoarthritis were included. Exclusion criteria were previous hip surgery in the painful hip, suspected fracture or malignant changes in the hip. INTERVENTION: Bilateral ultrasound examinations (n=92) were performed continuously by two experienced operators blinded to clinical information and other imaging findings. After 4-6 weeks, one operator reassessed the images. X-rays were assessed by a third imaging specialist. PRIMARY AND SECONDARY OUTCOME MEASURES: Inter-rater and intrarater reliability and agreement between ultrasound imaging and X-ray were assessed using Cohen's ordinal kappa statistics for binary categorical variables and weighted kappa for ordered categorical variables. RESULTS: Kappa values (κ) for inter-rater reliability were 0.9 and 0.8 for hip effusion/synovitis and osteoarthritis grading, respectively. For acetabular and femoral osteophytes, femoral cartilage changes and labrum changes κ ranged from 0.4 to 0.7. Intrarater reliability had κ equal or higher compared with inter-rater reliability. Agreement between ultrasound and X-ray findings ranged from κ=0.2 to κ=0.5. CONCLUSION: This study demonstrated substantial to almost perfect reliability on the most common ultrasound findings related to hip osteoarthritis and osteoarthritis grading. Agreement on the grade of osteoarthritis between ultrasound and X-ray was moderate. Overall, these results support ultrasound imaging as a reliable tool in the assessment of hip osteoarthritis.
KW - diagnostic radiology
KW - hip
KW - rheumatology
KW - ultrasound
U2 - 10.1136/bmjopen-2020-038643
DO - 10.1136/bmjopen-2020-038643
M3 - Journal article
C2 - 33154052
AN - SCOPUS:85095734276
VL - 10
JO - BMJ Open
JF - BMJ Open
SN - 2044-6055
IS - 11
M1 - e038643
ER -
ID: 251639783