The long-term biomechanical and viscoelastic performance of repairing anterior cruciate ligament after hemitransection injury in a goat model

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Bibliographic Details
Title translated into German:Das langfristige biomechanische und viskoelastische Verhalten der Heilung des vorderen Kreuzbandes nach halber Durchtrennung im Tierversuch an der Ziege
Author:Ng, Gabriel Y.F.; Oakes, Barry W.; McLean, Iain D.; Deacon, Owen W.; Lampard, Douglas
Published in:The American journal of sports medicine
Published:23 (1995), 1 , S. 109-117, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Journal article
Media type: Print resource
Language:English
ISSN:0363-5465, 1552-3365
Keywords:
Online Access:
Identification number:PU199605107733
Source:BISp

Author's abstract

To test the healing of the partially torn anterior cruciate ligament, we transected the posterolateral bundle in 11 adult female goats and tested the ligaments at 12, 24, and 52 weeks and 3 years after surgery. As early as 12 weeks after surgery translucent fibrous tissue covered the wound. The differences in anteroposterior laxity between right and left knees measured at 45ø and 90ø of flexion were not significantly different at each period. Results of Instron testing of the posterolateral bundle revealed the normalized changes in load-relaxation and Young's modulus were not significantly different at each period, but the ultimate tensile strength and stiffness at 3 years were significantly higher than at 12 weeks. Failure started at the repair site for the 12-week group, but at 24 and 52 weeks the failure occurred throughout the ligament. At 3 years, the specimens failed with bony avulsion, indicating the repaired tissue was not the weakest link of the bone-ligament-bone complex. This study shows that under favorable conditions, partial anterior cruciate ligament injuries are capable of repair. What is more important, the high ultimate tensile strength and stiffness of the 3-year repaired tissue indicate full structural repair of such an artificial transection injury may be possible. Verf.-Referat