Tight medial knot tying may increase retearing risk after transosseous equivalent repair of rotator cuff tendon.
Biomed Mater Eng
; 28(3): 267-277, 2017.
Article
em En
| MEDLINE
| ID: mdl-28527190
ABSTRACT
BACKGROUND:
Retearing mechanism after transosseous equivalent (TOE) rotator cuff repair has not been fully clarified yet.OBJECTIVE:
The purposes of this study were to compare the stress distribution pattern in the tendon stump between knotted and knotless TOE repair and to investigate the role of suture tension applied during medial knot tying using a 3-dimensional finite element (3D-FE) method.METHODS:
Both knotted and knotless TOE repairs were simulated on the 3D-FE human rotator cuff tear model. Elastic analysis was performed to compare the stress distribution pattern inside the tendon between the two models. The amount of compressive load applied to the medial-row sutures was then changed as 0, 20, 40, 60, 80, and 100 N in the knotted model.RESULTS:
Knotted model demonstrated more distinct stress concentration inside the tendon around medial-row sutures than the knotless model. Mean von Mises equivalent stress in this area in the 0, 20, 40, 60, 80, and 100 N models was 0.26, 0.35, 0.50, 0.70, 1.11, and 1.14 MPa, respectively.CONCLUSIONS:
In the knotted TOE repair, tight medial knot tying might cause a high stress concentration around medial knots, which may constitute one of the pathogenetic factors of postoperative retearing at this site.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tendões
/
Técnicas de Sutura
/
Manguito Rotador
/
Lesões do Manguito Rotador
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article