The anterior tilt of the acromion

Radiographic evaluation and correlation with shoulder diseases

N. Prato, D. Peloso, A. Franconeri, G. Tegaldo, G. B. Ravera, E. Silvestri, L. E. Derchi

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The aim of this study was to test whether the anterior tilt of the acromion can be objectively evaluated on lateral radiographs, and whether there is a relation between this anatomical feature and the most common shoulder diseases. Lateral radiographs of 15 dried scapulas were performed in neutral position and with 5° of caudal, cranial, anterior and posterior angulations. Two hundred and forty-three shoulders, both asymptomatic and affected by chronic and post-traumatic impingement, calcific tendinitis and instability, were examined by conventional radiography. The presence of rotator-cuff tears was investigated by sonography. A method was elaborated to obtain reproducible lateral radiographs and to determine the acromial tilt angle. Inter- and intraobserver and inter- and intraoperator variations in measurements were evaluated. Variations in tube angulation produced changes in tilt-angle values on dried scapulas. The average tilt angle for the chronic impingement and the instability groups were significantly different from the post-traumatic, calcific tendinitis and control groups. Rotator-cuff tears were significantly more frequent in the chronic impingement group and related to a more acute tilt angle. The inter- and intraobserver variability coefficients were 0.95 and 0.98, whereas the inter- and intraoperator variability coefficients were 0.94 and 0.96, respectively. Conventional radiography using fluoroscopy for positioning is a well-reproducible method for the evaluation of acromial tilt. There is a significant difference in tilt-angle values between some groups of subjects examined, but the lack of specificity limits the clinical importance of such measurement.

Original languageEnglish
Pages (from-to)1639-1646
Number of pages8
JournalEuropean Radiology
Volume8
Issue number9
Publication statusPublished - 1998

Fingerprint

Acromion
Scapula
Tendinopathy
Radiography
Observer Variation
Fluoroscopy
Ultrasonography
Control Groups
Rotator Cuff Injuries

Keywords

  • Abnormalities
  • Anatomy
  • Radiography
  • Shoulder

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Prato, N., Peloso, D., Franconeri, A., Tegaldo, G., Ravera, G. B., Silvestri, E., & Derchi, L. E. (1998). The anterior tilt of the acromion: Radiographic evaluation and correlation with shoulder diseases. European Radiology, 8(9), 1639-1646.

The anterior tilt of the acromion : Radiographic evaluation and correlation with shoulder diseases. / Prato, N.; Peloso, D.; Franconeri, A.; Tegaldo, G.; Ravera, G. B.; Silvestri, E.; Derchi, L. E.

In: European Radiology, Vol. 8, No. 9, 1998, p. 1639-1646.

Research output: Contribution to journalArticle

Prato, N, Peloso, D, Franconeri, A, Tegaldo, G, Ravera, GB, Silvestri, E & Derchi, LE 1998, 'The anterior tilt of the acromion: Radiographic evaluation and correlation with shoulder diseases', European Radiology, vol. 8, no. 9, pp. 1639-1646.
Prato N, Peloso D, Franconeri A, Tegaldo G, Ravera GB, Silvestri E et al. The anterior tilt of the acromion: Radiographic evaluation and correlation with shoulder diseases. European Radiology. 1998;8(9):1639-1646.
Prato, N. ; Peloso, D. ; Franconeri, A. ; Tegaldo, G. ; Ravera, G. B. ; Silvestri, E. ; Derchi, L. E. / The anterior tilt of the acromion : Radiographic evaluation and correlation with shoulder diseases. In: European Radiology. 1998 ; Vol. 8, No. 9. pp. 1639-1646.
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