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. 2020 Dec 17:7:592742.
doi: 10.3389/fvets.2020.592742. eCollection 2020.

Titanium-Alloy Anchoring System as a Suitable Method of Extracapsular Repair

Christopher Dominic  1 , Otto I Lanz  1 , Noelle Muro  1 , Dominique Sawyere  1 , Karanvir Aulakh  2 , Theresa Pancotto  1 , David Seda  3
Affiliations

Titanium-Alloy Anchoring System as a Suitable Method of Extracapsular Repair

Christopher Dominic et al. Front Vet Sci. .

Abstract

Objective: To characterize the effect of a titanium-alloy anchoring system (TAS) on the motion of the cranial cruciate ligament (CrCL) deficient stifle. To compare the motion with the TAS to that of the CrCL-intact and CrCL-deficient stifle. Study Design: Each canine pelvic limb was mounted in a loading jig under 30% body weight. Motion data was collected using an electromagnetic tracking system at stifle angles of 125°, 135°, and 145° with the CrCL-intact, CrCL-deficient and the TAS applied. Results: Total translation of the CrCL-deficient stifle following the TAS was reduced, but remained greater than the CrCL-intact stifle at angles of 125°, 135°, and 145°. Internal rotation of the TAS groups was greater than the CrCL-intact group at 145°, but not 125° and 135°. Varus motion of the TAS group was decreased compared to the CrCL-deficient group, but increased compared to the CrCL-intact group at angles of 125°, 135°, and 145°. Conclusion: Total translation and internal rotation of the CrCL-deficient stifle following the TAS differed from that of the CrCL-intact stifle. However, the TAS reduced total translation and internal rotation of the tibia relative to the femur in the CrCL-deficient stifle to levels that may yield clinically acceptable results.

Keywords: canine; cranial cruciate ligament; extracapsular; ruby; stifle.

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Conflict of interest statement

OL is a paid consultant for KYON Veterinary Surgical Products. DS was an employee of KYON Veterinary Surgical Products. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
FASTRAK receivers and TAS implants. This figure demonstrates the location of the FASTRAK receivers and TAS implants, which were applied to the lateral aspect of the stifle in each specimen. A = turnbuckle and UHMWPE simulating the quadriceps unit, B = the femoral FASTRAK receiver, C = the titanium link of the TAS, D = the tibial anchor of the TAS, E = the tibial FASTRAK receiver, F = the turnbuckle and metal cable simulating the gastrocnemius. Note: the femoral TAS bone anchor is not visible through the soft tissues in this photo.
Figure 2
Figure 2
FASTRAK coordinate system. A craniolateral view of the canine stifle is shown with the superimposed coordinate system that corresponds to the direction of stifle motion detected by the FASTRAK Tracking System. Z = cranial-caudal; Y= proximal-distal; X = medial-lateral; Azimuth = flexion-extension; Elevation = internal-external rotation; Roll = varus-valgus.
Figure 3
Figure 3
Mean values of total translation with the standard deviation bars applied. Comparisons between two groups that are significantly different from one another are indicated with a horizontal bar and double asterisks.
Figure 4
Figure 4
Mean values of internal-external rotation with the standard deviation bars applied. Comparisons between two groups that are significantly different from one another are indicated with a horizontal bar and double asterisks.
See this image and copyright information in PMC

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