Biomechanical evaluation of a veterinary suture anchor in the canine cadaver pelvis and femur.
A commercially available veterinary suture anchor was tested in the acetabula and femurs of canine cadavers. Size #2 suture anchor constructs were compared to a traditional screw and Teflon spiked washer constructs in a model of coxofemoral luxation repair. The screw/washer constructs failed at a higher maximum load than the #2 anchor constructs. In the acetabulum, significant differences in strength were also found in the position of the implant and in the direction of pull. The constructs in a more caudal position, and constructs pulled 90 degrees to the axis of insertion, failed at higher loads. The predominant mode of failure of the constructs was a suture failure. In the femur, size #5 suture anchors were used in a model of cranial cruciate ligament repair and collateral ligament repair. The anchor constructs failed predominantly by anchor pull-out in the distal femur. The constructs pulled 90 degrees to the axis of insertion were stronger than construcs pulled at 0 degrees to the axis of insertion. Varying the location of the implant in the femur did not affect the maximum load to failure.
Singer
M J
MJ
University of Illinois College of Veterinary Medicine, Department of Veterinary Clinical Medicine, Urbana, Illinois, USA. cutmemike@hotmail.com
Pijanowski
G
G
Wiley
R
R
Johnson
A L
AL
Siegel
A M
AM
D000818:Animals; D001696:Biomechanical Phenomena; D002102:Cadaver; D004285:Dogs / Q000293:injuries* / Q000601:surgery; D005264:Femoral Fractures / Q000601:surgery / Q000662:veterinary*; D005594:Fracture Fixation, Intramedullary / Q000379:methods / Q000662:veterinary*; D050723:Fractures, Bone / Q000601:surgery / Q000662:veterinary; D010384:Pelvic Bones / Q000293:injuries* / Q000601:surgery; D013536:Suture Techniques / Q000662:veterinary*