Biomechanical evaluation of varying the number of loops in a repair of a physiological model of Achilles tendon rupture.
Foot Ankle Int
; 36(4): 444-9, 2015 Apr.
Article
em En
| MEDLINE
| ID: mdl-25380774
ABSTRACT
BACKGROUND:
Numerous suturing techniques have been described to treat Achilles tendon ruptures. No prior studies have evaluated frayed tendon ends on construct strength and whether this allows for less extensile exposure.METHODS:
Forty bovine Achilles tendons were divided into groups 1 control and 4 experimental. Experimental groups were sectioned with ends frayed longitudinally in 2 mm intervals for 2 cm with no fraying for the control group. Four-stand Krackow sutures were used for repairs with 3 loops in the control group, 2 loops in frayed section for experimental groups, and varying numbers of loops (1-4) in healthy tendon. Samples were tested in loading cells at 100 N and 190 N for 1000 cycles. Gap width and maximum load failure were measured.RESULTS:
Gapping was <5 mm in controls at 100 N-190 N, significantly lower than experimentals. Greatest gapping occurred in groups with 1-2 loops in healthy tendon (10.9-13.9 mm). Most early catastrophic failures (5/8) occurred in groups with 1-2 loops in healthy tendon. Two failures at 100 N occurred in 1-loop healthy tendons. The least failures occurred in controls (2/8), at 190 N.CONCLUSION:
Suture loops incorporated into frayed tendon portions predisposed repairs to significantly greater gapping and lower maximal failure forces than 4-strand Krackow repairs in unfrayed tendons. CLINICAL RELEVANCE We cannot recommend attempting more limited exposures with sutures in frayed tendon as this may lead to early repair failure. We provided a physiologic model utilizing frayed tendon ends that resembles in vivo Achilles tendon rupture.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tendão do Calcâneo
/
Traumatismos dos Tendões
/
Resistência à Tração
/
Técnicas de Sutura
/
Procedimentos de Cirurgia Plástica
Tipo de estudo:
Evaluation_studies
Limite:
Animals
Idioma:
En
Revista:
Foot Ankle Int
Assunto da revista:
ORTOPEDIA
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Estados Unidos