Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2015 Nov 16;47(1):43-9.
doi: 10.1016/S2255-4971(15)30344-X. eCollection 2012 Jan-Feb.

BIOMECHANICAL STUDY OF TRANSCORTICAL OR TRANSTRABECULAR BONE FIXATION OF PATELLAR TENDON GRAFT WITH BIOABSORBABLE PINS IN ACL RECONSTRUCTION IN SHEEP

Mauro Batista Albano  1 , Paulo César Borges  2 , Mario Massatomo Namba  3 , João Luiz Vieira da Silva  4 , Francisco de Assis Pereira Filho  5 , Edmar Stieven Filho  6 , Jorge Eduardo Fouto Matias  7
Affiliations

BIOMECHANICAL STUDY OF TRANSCORTICAL OR TRANSTRABECULAR BONE FIXATION OF PATELLAR TENDON GRAFT WITH BIOABSORBABLE PINS IN ACL RECONSTRUCTION IN SHEEP

Mauro Batista Albano et al. Rev Bras Ortop. .

Abstract

Objective: To determine the initial resistance of fixation using the Rigid Fix(®) system, and compare it with traditional fixation methods using metal interference screws; and to evaluate the resistance of the fixation with the rigid fix system when the rotational position of the bone block is altered in the interior of the femoral tunnel.

Methods: forty ovine knee specimens (stifle joints) were submitted to anterior cruciate ligament reconstruction (ACL) using a bone-tendon-bone graft. In twenty specimens, the Rigid Fix method was used; this group was subdivided into two groups: ten knees the pins transfixed only the spongious area of the bone block, and ten for fixation passing through the layer of cortical bone. In the twenty remaining specimens, the graft was fixed with 9mm metal interference screws.

Results: comparison of the RIGIDFIX(®) method with the metal interference screw fixation method did not show any statistically significant differences in terms of maximum load and rigidity; also, there were no statistically significant differences when the rotational position of the bone block was altered inside the femoral tunnel. For these evaluations, a level of significance of p < 0.017 was considered.

Conclusion: fixation of the bone-tendon-bone graft with 2 bioabsorbable pines, regardless of the rotational position inside the femoral tunnel, gave a comparable fixation in terms of initial resistance to the metal interference screw, in this experimental model.

Keywords: Anterior Cruciate Ligament; Bone-Patellar Tendon-Bone Graft; Knee; Sheep.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Photograph of graft with bone block of 10 mm in diameter.
Figure 2
Figure 2
Photograph demonstrating the adaptation of the Rigidfix® guide: (A) front view; (B) side view.
Figure 3
Figure 3
Illustration demonstrating the two bone-block fixation methods using transverse pins.
Figure 4
Figure 4
Photograph of specimen fixed using interference screw.
Figures 1-5A and 5B
Figures 1-5A and 5B
Photographs showing the composition of the MTS 810 hydraulic machine.
Figure 6
Figure 6
Graph comparing the maximum load values between the different fixation groups: interference screw, fixation to cortical bone and fixation to spongy bone.
Figures 1-7A and 7B
Figures 1-7A and 7B
Photographs of specimens showing locations and most frequent types of failure found in the fixation method with interference screws.
Figures 1-8A and 8B
Figures 1-8A and 8B
Photograph showing types of failure in the method with bioabsorbable pins.
See this image and copyright information in PMC

References

    1. Shelbourne KD, Nitz P. Accelerated rehabilitation after anterior cruciate ligament reconstruction. Am J Sports Med. 1990;18(3):292–299. - PubMed
    1. Brand J, Jr, Weiler A, Caborn DN, Brown CH, Jr, Johnson DL. Graft fixation in cruciate ligament reconstruction. Am J Sports Med. 2000;28(5):761–774. - PubMed
    1. Snyder-Mackler L, Delitto A, Bailey SL, Stralka SW. Strength of the quadríceps femoris muscle and functional recovery after reconstruction of the anterior cruciate ligament. A prospective, randomized clinical trial of electrical stimulation. J Bone Joint Surg Am. 1995;77(8):1166–1173. - PubMed
    1. Arnoczky SP, Tarvin GB, Marshall JL. Anterior cruciate ligament replacement using patellar tendon. An evaluation of graft revascularization in the dog. J Bone Joint Surg Am. 1982;64(2):217–224. - PubMed
    1. Noyes FR, Butler DL, Grood ES, Zernicke RF, Hefzy MS. Biomechanical analysis of human ligament grafts used in knee-ligament repairs and reconstructions. J Bone Joint Surg Am. 1984;66(3):344–352. - PubMed

LinkOut - more resources