Biochemistry and biomechanics of healing tendon: Part I. effects of rigid plaster casts and functional casts

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Bibliographic Details
Title translated into German:Biochemische und biomechanische Aspekte der Heilung von Sehnen: Teil I. Auswirkungen von starren Gipsverbaenden und von funktionellen Stuetzschalen
Author:Stehno-Bittel, L.; Reddy, G.K.; Gum, S.; Enwemeka, C.S.
Published in:Medicine and science in sports and exercise
Published:30 (1998), 6 , S. 788-793, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Journal article
Media type: Print resource
ISSN:0195-9131, 1530-0315
Online Access:
Identification number:PU199807303102


Purpose: Traditional treatment of surgically repaired Achilles tendons includes complete immobilization of the joint in rigid casts for 6 to 8 wk. We tested the use of functional polyurethane casts as an alternative to rigid plaster casts after experimental tenotomy and repair of the rabbit Achilles tendon. Methods: After repair the limbs of 15 experimental rabbits were immobilized in a functional polyurethane cast for 15 d, while those of 14 controls were immobilized in traditional rigid plaster casts for the same period. Results: Functional casting resulted in a 60% increase in total collagen in the neotendon compared with that in rigid casting (P<0.05). Mature collagen cross-links declined 8% in the tendons with functional casts. The biomechanical parameters of the tendons changed with functional casting, showing a 20% increase in maximum load and 21% increase in maximum stress. Conclusions: These changes were noted without any cases of tendon re-rupture in either type of cast. Thus, functional casting following surgery of Achilles tendons appears to improve healing without significant risks of re-rupture. Verf.-Referat