Influence of suture material on biomechanical and histological indicators of Achilles tendon heeling in rabbits/Utjecaj sivacega materijala na biomehanicke i histoloske pokazatelje cijeljenja petne tetive u kunica

• Published in: Veterinarski arhiv Vol. 81; no. 2; p. 223
• Main Authors: Kreszinger, Mario, Kos, Josip, Vukovic, Snjezana, Vnuk, Drazen, Maticic, Drazen, Pirkic, Boris, Stejskal, Marko, Pecin, Marko, Smolec, Ozren, Kostesic, Petar, Abaffy, Mirna
• Format: Journal Article
• Language: English
• Published: Sveuciliste U Zagrebu 01.03.2011
• Subjects: Achilles tendon; Biomechanics; Care and treatment; Diagnosis; Health aspects; Injuries; Physiological aspects; Rabbits; Sutures; Tendon injuries; Croatia
• ISSN: 0372-5480

This study shows on a rabbit model in vivo the importance of suture material elasticity in Achilles tendon healing. Tendon reconstruction was performed on 30 rabbits divided into three groups of 10 animals, according to the suture material. Tendons were sutured by the Krackow suture. Steel wire as a stiff material, polypropylene as a plastic material, and polybutester as a material that shows elasticity and resistance to deformities were used. In all the animals the unoperated, contra lateral limb served as control. A servohidraulic jack was used to set a maximum loading capacity until the breaking point ([F.sub.max]) and drawing ability (A). The breaking strength of tendons reconstructed by polybutester was not statistically different in comparison to the breaking strength of control tendons, but were significantly higher in comparison to tendons sutured by wire or polypropylene. Different histological staining methods were used to show the parameters of healing tendon tissue. The collagen fiber structure and arrangement, and the cellularity of tendon scar tissue sutured by polybutester are more similar to those of the control tendon. Achilles tendon suturing with polybutester is beneficial for tendon healing, so its clinical use is recommended. Key words: Achilles tendon, suture material, breaking strength, polybutester Ova studija na modelu kunica in vivo istrazuje znacenje elasticnosti sivacega materijala u cijeljenju petne tetive. Sivanje tetiva izvedeno je na 30 kunica podijeljenih u 3 skupine po 10 zivotinja, s obzirom na upotrijebljen sivaci materijal. Usporedeni su celicna zica kao krut materijal, polipropilen kao plastican materijal i polibutester kao elastican materijal otporan na deformacije. Servohidraulicna kidalica upotrijebljena je za odredivanje sile kidanja i istezljivosti tetiva. Sila kidanja tetiva rekonstruiranih polibutesterom nije se statisticki znacajno razlikovala od sila tetiva kontrolne skupine, ali je bila znacajno veca u odnosu na sile kidanja tetiva sasivenih celicnom zicom ili polipropilenom. Razlicite metode histoloskoga bojenja rabljene su za prikazivanje pokazatelja cijeljenja tetiva. Grada kolagenih vlakana, uredenost i brojnost stanica oziljkastoga tkiva tetiva sasivenih polibutesterom slicnija je tetivama kontrolne skupine. Sivanje tetive polibutesterom ucinkovito je za njezino cijeljenje, te je stoga preporucljiv u klinickoj uporabi. Kljucne rijeci: petna tetiva, sivaci materijal, snaga kidanja, polibustester