ISSN: 2544-4395
Physiotherapy Quarterly
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3/2022
vol. 30
 
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abstract:
Original paper

Reliability of musculoskeletal ultrasound imaging to measure calcific deposits in patients with calcified rotator cuff tendinopathy

Arooj Fatima
1
,
Ashfaq Ahmad
1
,
Syed Amir Gilani
1
,
Shiza Kazmi
2
,
Haider Darain
3
,
Asif Hanif
1

1.
University Institute of Physical Therapy, Faculty of Allied Health Sciences, University of Lahore, Lahore, Pakistan
2.
School of Management, University of Management and Technology, Lahore, Pakistan
3.
Rehabilitation Sciences, Faculty of Allied Health Sciences, Khyber Medical University, Islamabad, Pakistan
Physiother Quart. 2022;30(3):34–38
Online publish date: 2022/09/26
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Introduction
This reliability study was designed to assess intra-rater and inter-rater reliability of musculoskeletal ultrasound as a diagnostic modality to measure calcific deposits in subjects with rotator cuff tendinopathy.

Methods
Overall, 15 participants (10 males, 5 females) with calcified shoulder, aged 32–55 years, were examined in the same sitting posture. Two experienced radiologists imaged calcific deposits, measured twice daily by both raters with an interval of 2 hours for within-day reliability and re-measured after 1 week for between-day reliability. Data were analysed by using intra-class and inter-class correlation coefficient.

Results
The mean size of calcific deposits in supraspinatus tendons was 14.61 ± 1.78, 14.87 ± 1.77, and 14.88 ± 1.88 mm for the first rater and 14.89 ± 1.78, 14.98 ± 1.792, and 15.13 ± 1.84 mm for the second rater. The results reflected excellent reliability, with the intra-class correlation coefficient for within-day comparison calculated as 0.989 (0.975–0.996) for the first rater and 0.984 (0.963–0.994) for the second rater (p = 0.000). The inter-class correlation coefficient for between-rater comparison equalled 0.991 for the first measurements by the first and second raters, 0.984 for the second measurements, and 0.986 for the third measurements.

Conclusions
A high degree of within-day and between-day reliability was observed between the successive measurements. This shows that musculoskeletal ultrasound is a highly reliable diagnostic tool for measuring the size of calcific deposits in patients with tendinopathy.

keywords:

musculoskeletal ultrasound, calcified rotator cuff tendinopathy, reliability

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