Influence of fat infiltration, tear size, and post-operative tendon integrity on muscle contractility of repaired supraspinatus muscle.
Cofield classification
Contractility
Goutallier stage
Real-time tissue elastography
Rotator cuff tear
Sugaya classification
Journal
European journal of orthopaedic surgery & traumatology : orthopedie traumatologie
ISSN: 1432-1068
Titre abrégé: Eur J Orthop Surg Traumatol
Pays: France
ID NLM: 9518037
Informations de publication
Date de publication:
Jul 2022
Jul 2022
Historique:
received:
05
09
2020
accepted:
18
04
2021
pubmed:
20
6
2021
medline:
11
6
2022
entrez:
19
6
2021
Statut:
ppublish
Résumé
The purpose of this study was to evaluate the effect of fat infiltration, tear size, and post-operative tendon integrity, on post-operative contractility. Thirty-five patients who underwent rotator cuff repair were included. The fat infiltration, tear size, and post-operative tendon integrity were evaluated by Goutallier stage, Cofield classification, and Sugaya classification, respectively. The muscle elasticity at rest and at contraction was assessed by real-time tissue elastography pre- and one-year post-operatively. We defined the difference in elasticity between at rest and at contraction as the activity value which reflects muscle contractility. The activity value in patients with Sugaya Type I tended to increase regardless of Cofield classification, whereas those with Sugaya Type III and IV tended to decrease. While the activity value in the patients classified as stage 1 and Type I tended to increase, patients classified as stage 2 showed decreased or constant in contractility even in those subjects classified as Type I. Stepwise multiple regression analysis showed both pre- (p = 0.004, r = -0.47) and post-operative activity values (p = 0.022, r = -0.39) to be significantly correlated only with the Goutallier stage. Multiple regression analysis indicated only the Goutallier stage was a significant independent factor for contractility of the supraspinatus muscle. Supraspinatus muscle contractility in patients classified as Types III and IV based on the Sugaya classification tended to decrease post-operatively, while patients whose contractility increased post-operatively were characterized by having a Type I tendon integrity.
Sections du résumé
BACKGROUND
BACKGROUND
The purpose of this study was to evaluate the effect of fat infiltration, tear size, and post-operative tendon integrity, on post-operative contractility.
METHODS
METHODS
Thirty-five patients who underwent rotator cuff repair were included. The fat infiltration, tear size, and post-operative tendon integrity were evaluated by Goutallier stage, Cofield classification, and Sugaya classification, respectively. The muscle elasticity at rest and at contraction was assessed by real-time tissue elastography pre- and one-year post-operatively. We defined the difference in elasticity between at rest and at contraction as the activity value which reflects muscle contractility.
RESULTS
RESULTS
The activity value in patients with Sugaya Type I tended to increase regardless of Cofield classification, whereas those with Sugaya Type III and IV tended to decrease. While the activity value in the patients classified as stage 1 and Type I tended to increase, patients classified as stage 2 showed decreased or constant in contractility even in those subjects classified as Type I. Stepwise multiple regression analysis showed both pre- (p = 0.004, r = -0.47) and post-operative activity values (p = 0.022, r = -0.39) to be significantly correlated only with the Goutallier stage.
CONCLUSION
CONCLUSIONS
Multiple regression analysis indicated only the Goutallier stage was a significant independent factor for contractility of the supraspinatus muscle. Supraspinatus muscle contractility in patients classified as Types III and IV based on the Sugaya classification tended to decrease post-operatively, while patients whose contractility increased post-operatively were characterized by having a Type I tendon integrity.
Identifiants
pubmed: 34146183
doi: 10.1007/s00590-021-03020-1
pii: 10.1007/s00590-021-03020-1
pmc: PMC9177464
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
837-843Subventions
Organisme : a Grant-in-Aid for JSPS fellows
ID : 19J10699
Informations de copyright
© 2021. The Author(s).
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