Evaluation of bilateral acromiohumeral distance on magnetic resonance imaging and radiography in patients with unilateral rotator cuff tears

Sürücü, Serkan; Aydın, Mahmud; Çapkın, Sercan; Karahasanoglu, Rıdvan; Yalçın, Mazhar; Atlıhan, Doğan

doi:10.1007/s00402-021-04026-4

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…The AHI had a lower value in larger tears than in the smaller tears. Similar to the study comparing AHI values of plain radiographs and MRIs on bilateral shoulders of unilateral RC tears 13 , it has been shown the mean AHI was significant narrowing in the shoulder with RC tear. The mean AHI on radiographs were 6.93 mm and 9.11 mm, on MRIs were 5.94 mm and 7.46 mm in the patient and control groups, respectively.…”

Section: Discussionsupporting

confidence: 71%

The differences of the acromiohumeral interval between supine and upright radiographs of the shoulder

Sanguanjit

Apivatgaroon

Boonsun

et al. 2022

Sci Rep

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The acromiohumeral interval (AHI) is a measurement used to determine the superior migration of the humeral head in rotator cuff (RC) tear patients. The purpose of this study was to compare the AHI of; supine, upright shoulder radiographs, and magnetic resonance imaging (MRI) of the shoulder. The 86 shoulders were divided into 3 groups that included; (1) non-full thickness tear (50%), (2) full thickness (FT) tear ≤3 cm (33.7%), and (3) FT tear > 3 cm (16.3%). The mean difference of AHI noted was significantly lower in the supine radiographs and MRIs than with the upright (1.34–1.37 mm, 1.62–1.87 mm, respectively). Upright AHI ≤ 7.0 mm had 27.9% sensitivity and 100% specificity in diagnosing FT tears with 64% accuracy (p < 0.001). The supine AHI ≤ 6.5 mm had 32.6% sensitivity, 100.0% specificity, and 66.3% accuracy (p < 0.01). The results revealed the AHI in supine radiographs were significantly lower than upright shoulder radiographs. For AHI ≤ 7 mm in upright shoulder radiographs, this remains as an appropriate diagnostic test for ruling in shoulders with full thickness rotator cuff tears. This value was not relevant for use as the cut point in the supine radiographs and MRIs.

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Section: Discussionsupporting

confidence: 71%

The differences of the acromiohumeral interval between supine and upright radiographs of the shoulder

Sanguanjit

Apivatgaroon

Boonsun

et al. 2022

Sci Rep

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“…Some studies also used non-standardized positioning, and the measurements in those studies were also consistent with the measurements on non-standardized images in this study. [33,35] In the measurements we made on the outlet radiographs, both intra-and interobserver measurements showed a good to excellent level of agreement, reaching up to an ICC of 0.98. These findings are consistent with those of Saupe et al, [3] who reported excellent observer agreement in unspecified outlet radiographs.…”

Section: Discussionmentioning

confidence: 86%

“…Some studies also used non-standardized positioning, and the measurements in those studies were also consistent with the measurements on non-standardized images in this study. [ 33 , 35 ]…”

Section: Discussionmentioning

confidence: 99%

Are acromiohumeral distance measurements on conventional radiographs reliable? A prospective study of inter-method agreement with ultrasonography, and assessment of observer variability

Utku Deger,

Deniz Davulcu,

Karaismailoglu

et al. 2023

Jt Dis Relat Surg

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Objectives This study aims to investigate the reliability of acromiohumeral distance (AHD) measurements using conventional radiographs and to compare non-standardized and standardized radiographs with intra-/interobserver reliability measurements. Patients and methods Between February 2021 and January 2022, a total of 110 shoulders of 55 patients (25 males, 30 females; mean age: 49.7±12.6 years; range, 25 to 77 years) were included. Radiographs were taken in four different positions: primarily shoulder anteroposterior (AP), true AP, standardized true AP, and standardized outlet views. The AHD was measured by three orthopedists. A prospective ultrasonography (US) evaluation was performed by an experienced physiatrist, and the relationship between US and radiographic measurements was evaluated. The intra- and interobserver reliability of radiographic measurements was assessed. Results On the standardized true AP view measurements, all observers showed a moderate to good agreement with US measurements (intraclass correlation coefficients [ICC]: 0.68-0.75). There was no significant difference between the AHD measurements of the senior orthopedist on standardized true AP and outlet views, and the US measurements. The intraobserver agreement of US measurements was excellent (ICC: 0.98, 95% confidence interval [CI]: 0.98-0.99), and the intraobserver agreement level of measurements on radiographs were good to excellent with a wide range of ICC values (ICC: 0.79-0.97). Interobserver reliability was the highest on the standardized outlet view, with an ICC of 0.91 and 0.88 in two measurement times. Interobserver reliability of other measurements were good with ICC values ranging from 0.82 to 0.88. Conclusion The AHD measurements on radiographs are compatible with US measurements within up to 2 mm difference if standardization is ensured. Also, measurements on standardized views have a superior consistency with lower standard error of measurement and minimal detectable change values. Therefore, we recommend using standardized true shoulder AP and standardized outlet radiographs in clinical practice and studies, as these are the most accurate in demonstrating true AHD.

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Interobserver reliability of shoulder radiographic findings and correlation to MRI: a preliminary case series

Bufe,

Müller,

Retzlaff

et al. 2024

Arch Orthop Trauma Surg

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Evaluation of bilateral acromiohumeral distance on magnetic resonance imaging and radiography in patients with unilateral rotator cuff tears

Cited by 3 publications

References 24 publications

The differences of the acromiohumeral interval between supine and upright radiographs of the shoulder

The differences of the acromiohumeral interval between supine and upright radiographs of the shoulder

Are acromiohumeral distance measurements on conventional radiographs reliable? A prospective study of inter-method agreement with ultrasonography, and assessment of observer variability

Interobserver reliability of shoulder radiographic findings and correlation to MRI: a preliminary case series

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