Ferris M Pfeiffer1, Matthew J Smith2, James L Cook3, Keiichi Kuroki4. 1. Department of Orthopaedic Surgery, University of Missouri, Columbia, MO, USA; Comparative Orthopaedic Laboratory, University of Missouri, Columbia, MO, USA; Department of Bioengineering, University of Missouri, Columbia, MO, USA. Electronic address: pfeifferf@health.missouri.edu. 2. Department of Orthopaedic Surgery, University of Missouri, Columbia, MO, USA. 3. Department of Orthopaedic Surgery, University of Missouri, Columbia, MO, USA; Comparative Orthopaedic Laboratory, University of Missouri, Columbia, MO, USA. 4. Comparative Orthopaedic Laboratory, University of Missouri, Columbia, MO, USA; Veterinary Diagnostic Laboratory, University of Missouri, Columbia, MO, USA.
Abstract
BACKGROUND: This study examined histologic characteristics and biomechanical performance of 2 commercially available, small glenoid anchors. METHODS: Adult research dogs (n = 6) were used for histologic analysis. Anchors were inserted into the lateral rim of the glenoid using the manufacturer's protocol. The dogs were humanely euthanatized 8 weeks after anchor implantation, and the glenoids were collected for histologic analysis. Bone socket width data were compared for statistically significant (P < .05) differences. In addition, 4 matched pairs (n = 8) of human cadaveric glenoids were instrumented with 1 BioComposite SutureTak (Arthrex, Naples, FL, USA) and 1 JuggerKnot (Biomet, Warsaw, IN, USA) suture anchor in the anterior-inferior quadrant. Anchor constructs were preloaded to 5 N, cycled from 5 to 25 N for 100 cycles, and then pulled to failure. RESULTS: All JuggerKnot anchor sites were cyst-like cavities with a rim of dense lamellar bone. All BioComposite SutureTak anchor sites contained intact anchors with close approximation of anastomosing trabeculae of lamellar bone. At 8 weeks after implantation, mean socket width of the JuggerKnot anchor sites was 6.3 ± 2.5 mm, which was significantly (P = .013) larger than the mean socket width of 2.7 ± 0.7 mm measured for the BioComposite SutureTak anchor sites. The JuggerKnot anchor demonstrated larger displacements during subfailure cyclic loading (2.9 ± 1.0 mm compared with 1.3 ± 0.4 mm) and load to failure tests (13.7 ± 6.6 mm compared with 3.2 ± 0.5 mm). Statistical differences (P < .01) existed in every category except ultimate load. CONCLUSIONS: Based on the biomechanical in human bone and histologic findings in canine subjects, the all-suture anchor may be at risk for clinical failure.
BACKGROUND: This study examined histologic characteristics and biomechanical performance of 2 commercially available, small glenoid anchors. METHODS: Adult research dogs (n = 6) were used for histologic analysis. Anchors were inserted into the lateral rim of the glenoid using the manufacturer's protocol. The dogs were humanely euthanatized 8 weeks after anchor implantation, and the glenoids were collected for histologic analysis. Bone socket width data were compared for statistically significant (P < .05) differences. In addition, 4 matched pairs (n = 8) of human cadaveric glenoids were instrumented with 1 BioComposite SutureTak (Arthrex, Naples, FL, USA) and 1 JuggerKnot (Biomet, Warsaw, IN, USA) suture anchor in the anterior-inferior quadrant. Anchor constructs were preloaded to 5 N, cycled from 5 to 25 N for 100 cycles, and then pulled to failure. RESULTS: All JuggerKnot anchor sites were cyst-like cavities with a rim of dense lamellar bone. All BioComposite SutureTak anchor sites contained intact anchors with close approximation of anastomosing trabeculae of lamellar bone. At 8 weeks after implantation, mean socket width of the JuggerKnot anchor sites was 6.3 ± 2.5 mm, which was significantly (P = .013) larger than the mean socket width of 2.7 ± 0.7 mm measured for the BioComposite SutureTak anchor sites. The JuggerKnot anchor demonstrated larger displacements during subfailure cyclic loading (2.9 ± 1.0 mm compared with 1.3 ± 0.4 mm) and load to failure tests (13.7 ± 6.6 mm compared with 3.2 ± 0.5 mm). Statistical differences (P < .01) existed in every category except ultimate load. CONCLUSIONS: Based on the biomechanical in human bone and histologic findings in canine subjects, the all-suture anchor may be at risk for clinical failure.
Authors: Kashif A Memon; Richard Dimock; Alessio Bernasconi; Anshul Sobti; Paolo Consigliere; Mohamed A Imam; A Ali Narvani Journal: Arch Bone Jt Surg Date: 2021-09
Authors: John Erickson; Frank Chiarappa; Jonathan Haskel; Justin Rice; Adam Hyatt; James Monica; Aman Dhawan Journal: Orthop J Sports Med Date: 2017-07-20
Authors: Dimitris Ntalos; Kay Sellenschloh; Gerd Huber; Daniel Briem; Klaus Püschel; Michael M Morlock; Karl-Heinz Frosch; Florian Fensky; Till Orla Klatte Journal: PLoS One Date: 2019-11-27 Impact factor: 3.240