Contribution of full-thickness supraspinatus tendon tears to acquired subcoracoid impingement.
Clin Radiol
; 62(6): 556-63, 2007 Jun.
Article
en En
| MEDLINE
| ID: mdl-17467393
ABSTRACT
AIM:
To assess the relationship between the severity of full-thickness supraspinatus tendon tears and the development of subcoracoid impingement. MATERIALS ANDMETHODS:
Fifty-one magnetic resonance imaging (MRI) shoulder examination reports with full-thickness supraspinatus tears were retrospectively identified and reviewed by two dedicated musculoskeletal radiologists. The appearances of the rotator cuff muscles, biceps tendon and the lesser tubercle were recorded. The acromio-humeral distance and the axial coraco-humeral distance were measured. The data were recorded and analysed electronically.RESULTS:
The kappa values for inter-observer agreement were 0.91 for acromio-humeral distance and 0.85 for coraco-humeral distance measurements. Twenty-six patients had significant retraction of the supraspinatus tendon, 85% (22 cases) of this group had imaging evidence of tear or tendonopathy of the subscapularis tendon. Twenty-five patients had no significant retraction of the supraspinatus, 56% (14 cases) of this group had imaging evidence of a subscapularis tear or tendonopathy. The acromio-humeral distance was significantly less in patients with supraspinatus tears and retraction (p<0.05). The subscapularis tendon was significantly more likely to be abnormal if the supraspinatus was retracted than if no retraction was present (p<0.05). There were no significant differences in coraco-humeral distances between the groups.CONCLUSION:
Subscapularis tendon signal and structural changes are frequently associated with full-thickness supraspinatus tendon tears, particularly if the supraspinatus is significantly retracted. In this static MRI series, the data do not support the occurrence of classical subcoracoid impingement as an aetiology; however, they may support the possibility of a dynamic mechanism, to which future studies could be directed.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Traumatismos de los Tendones
/
Lesiones del Manguito de los Rotadores
Tipo de estudio:
Observational_studies
/
Risk_factors_studies
Límite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Clin Radiol
Año:
2007
Tipo del documento:
Article
País de afiliación:
Irlanda