The role of Plantaris Longus in Achilles tendinopathy: a biomechanical study.
Foot Ankle Surg
; 17(4): 252-5, 2011 Dec.
Article
em En
| MEDLINE
| ID: mdl-22017896
ABSTRACT
BACKGROUND:
The Plantaris Longus Tendon (PLT) may be implicated in Achilles (AT) tendinopathy. Different mechanical characteristics may be the cause. This study is designed to measure these.METHODS:
Six PLT and six AT were harvested from frozen cadavers (aged 65-88). Samples were stretched to failure using a Minimat 2000™ (Rheometric Scientific Inc.). Force and elongation were recorded. Calculated tangent stiffness, failure stress and strain were obtained. Averaged mechanical properties were compared using paired, one-tailed t-tests.RESULTS:
Mean stiffness was higher (p<0.001) in the PLT, measuring 5.71 N/mm (4.68-6.64), compared with 1.73 N/mm (1.40-2.22) in AT. Failure stress was also higher (p<0.01) in PLT 1.42 N/mm(2) (0.86-2.23) AT 0.20 N/mm(2) (0.16-0.25). Failure strain was less (p<0.05) in PLT 14.1% (11.5-16.8) than AT 21.8% (14.9-37.9).CONCLUSIONS:
The PLT is stiffer, stronger than AT, demonstrating potential for relative movement under load. The stiffer PLT could tether AT and initiate an inflammatory response.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tendão do Calcâneo
/
Tendinopatia
Limite:
Aged
/
Aged80
/
Humans
/
Male
Idioma:
En
Revista:
Foot Ankle Surg
Assunto da revista:
ORTOPEDIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Reino Unido