Traction endurance biomechanical study of metallic suture anchors at different insertion angles

The suture anchors' insertion angle and its traction resistance are the main subjects of this study. Twenty trials were realized using threaded suture anchors in four diferents angulations (30º /45º /60º /90º) in human bone (distal femur) and another twenty trials in artificial bone (SawboneTM). The anchors were pulled out being tractioned uprightly from its bone surface by a Kratos Universal test machine. The human bone results found no relation between the main subjects of this study, so whithout statistical value. On the other hand at the artificial bone the insertion angle of 90º beared more traction, being statistically significant compared to the other angles.

Download Full-text

The Effect of Mitek Anchor Insertion Angle to Attachment of FDP Avulsion Injuries

Journal of Hand Surgery (European Volume) ◽

10.1016/j.jhsb.2005.12.004 ◽

2006 ◽

Vol 31 (3) ◽

pp. 292-295 ◽

Cited By ~ 27

Author(s):

F. B. SCHREUDER ◽

P. J. SCOUGALL ◽

E. PUCHERT ◽

F. VIZESI ◽

W. R. WALSH

Keyword(s):

Nail Plate ◽

Biomechanical Study ◽

Flexor Digitorum Profundus ◽

Suture Anchors ◽

Insertion Angle ◽

Human Cadavers ◽

Potential Risks ◽

Flexor Digitorum

Flexor digitorum profundus (FDP) tendon avulsions, although uncommon, are not infrequent injuries. A widely accepted method of treating Type 1 FDP avulsions is a pullout suture tied over a button on the nail plate. The external dorsal button is often a source of inconvenience for the patient. Potential risks associated with button use include nail plate deformities, nail fold necrosis and infections tracking along the sutures. The use of small suture anchors provides a satisfactory alternative, because buried fixation avoids these potential complications. This in vitro, biomechanical study examined the influence of the anchor orientation on the properties of the repaired FDP tendon using human cadavers.

Download Full-text

Biomechanical Study: Determining the Optimum Insertion Angle for Screw-In Suture Anchors—Is Deadman's Angle Correct?

Arthroscopy The Journal of Arthroscopic and Related Surgery ◽

10.1016/j.arthro.2014.07.010 ◽

2014 ◽

Vol 30 (12) ◽

pp. 1535-1539 ◽

Cited By ~ 18

Author(s):

Robert N. Green ◽

Oliver W. Donaldson ◽

Meilyr Dafydd ◽

Sam L. Evans ◽

Rohit Kulkarni

Keyword(s):

Biomechanical Study ◽

Suture Anchors ◽

Insertion Angle

Download Full-text

Conventional rotator cuff versus all-suture anchors—A biomechanical study focusing on the insertion angle in an unlimited cyclic model

PLoS ONE ◽

10.1371/journal.pone.0225648 ◽

2019 ◽

Vol 14 (11) ◽

pp. e0225648 ◽

Cited By ~ 3

Author(s):

Dimitris Ntalos ◽

Kay Sellenschloh ◽

Gerd Huber ◽

Daniel Briem ◽

Klaus Püschel ◽

...

Keyword(s):

Rotator Cuff ◽

Biomechanical Study ◽

Suture Anchors ◽

Insertion Angle ◽

Cyclic Model

Download Full-text

Interference Screw Versus Suture Anchors for Femoral Fixation in Medial Patellofemoral Ligament Reconstruction: A Biomechanical Study

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967121989282 ◽

2021 ◽

Vol 9 (3) ◽

pp. 232596712198928

Author(s):

Heath P. Gould ◽

Nicholas R. Delaney ◽

Brent G. Parks ◽

Roshan T. Melvani ◽

Richard Y. Hinton

Keyword(s):

Medial Patellofemoral Ligament ◽

Interference Screw ◽

Biomechanical Study ◽

Graft Fixation ◽

Mpfl Reconstruction ◽

Suture Anchors ◽

Femoral Fixation ◽

Significant Difference ◽

Load To Failure ◽

The Mean

Background: Femoral-sided graft fixation in medial patellofemoral ligament (MPFL) reconstruction is commonly performed using an interference screw (IS). However, the IS method is associated with several clinical disadvantages that may be ameliorated by the use of suture anchors (SAs) for femoral fixation. Purpose: To compare the load to failure and stiffness of SAs versus an IS for the femoral fixation of a semitendinosus autograft in MPFL reconstruction. Study Design: Controlled laboratory study. Methods: Based on a priori power analysis, a total of 6 matched pairs of cadaveric knees were included. Specimens in each pair were randomly assigned to receive either SA or IS fixation. After an appropriate reconstruction procedure, the looped end of the MPFL graft was pulled laterally at a rate of 6 mm/s until construct failure. The best-fit slope of the load-displacement curve was then used to calculate the stiffness (N/mm) in a post hoc fashion. A paired t test was used to compare the mean load to failure and the mean stiffness between groups. Results: No significant difference in load to failure was observed between the IS and the SA fixation groups (294.0 ± 61.1 vs 250.0 ± 55.9; P = .352), although the mean stiffness was significantly higher in IS specimens (34.5 ± 9.6 vs 14.7 ± 1.2; P = .004). All IS reconstructions failed by graft pullout from the femoral tunnel, whereas 5 of the 6 SA reconstructions failed by anchor pullout. Conclusion: In this biomechanical study using a cadaveric model of MPFL reconstruction, SA femoral fixation was not significantly different from IS fixation in terms of load to failure. The mean load-to-failure values for both reconstruction techniques were greater than the literature-reported values for the native MPFL. Clinical Relevance: These results suggest that SAs are a biomechanically viable alternative for femoral-sided graft fixation in MPFL reconstruction.

Download Full-text

A Biomechanical Evaluation of Three Forms of Internal Fixation Used in Ankle Arthrodesis

Foot & Ankle International ◽

10.1177/107110079401500603 ◽

1994 ◽

Vol 15 (6) ◽

pp. 297-300 ◽

Cited By ~ 45

Author(s):

Michael P. Dohm ◽

James B. Benjamin ◽

Jeffrey Harrison ◽

John A. Szivek

Keyword(s):

Internal Fixation ◽

Plate Fixation ◽

Ankle Arthrodesis ◽

Biomechanical Study ◽

The Other ◽

Fixation Failure ◽

Plate Group ◽

Biomechanical Evaluation ◽

The Stability ◽

Fibular Strut

A biomechanical study was undertaken to evaluate the relative stability of three types of internal fixation used for ankle arthrodesis. Crossed screw fixation, RAF fibular strut fixation, and T-plate fixation were tested in 30 cadaver ankles using an MTS machine. T-plate fixation consistantly provided the stiffest construct when compared with the other types of fixation. Failure occurred by distraction of bony surfaces, posterior to the plane of fixation, in the crossed screw and RAF groups. In contrast, failure in the T-plate group occurred through compression of bone anterior to the midcoronal plane of the tibia. Although the stability of fixation is only one factor in determining the success or failure of ankle arthrodesis, the results of this study would support T-plate fixation over the other forms tested.

Download Full-text

Suture anchors, properties versus material and design: a biomechanical study in ovine model

European Journal of Orthopaedic Surgery & Traumatology ◽

10.1007/s00590-010-0667-8 ◽

2010 ◽

Vol 21 (2) ◽

pp. 95-100 ◽

Cited By ~ 3

Author(s):

I. Bisbinas ◽

E. A. Magnissalis ◽

I. Gigis ◽

T. Beslikas ◽

I. Hatzokos ◽

...

Keyword(s):

Biomechanical Study ◽

Suture Anchors ◽

Ovine Model ◽

Versus Material

Download Full-text

Biomechanical Analysis of a Double-Loaded Glenoid Anchor Configuration

The American Journal of Sports Medicine ◽

10.1177/0363546512469090 ◽

2012 ◽

Vol 41 (1) ◽

pp. 163-168 ◽

Cited By ~ 22

Author(s):

Ganesh V. Kamath ◽

Stephen Hoover ◽

R. Alexander Creighton ◽

Paul Weinhold ◽

Aaron Barrow ◽

...

Keyword(s):

Tensile Load ◽

The Other ◽

Biomechanical Analysis ◽

Bankart Repair ◽

Matched Pair ◽

Materials Testing ◽

Testing Device ◽

Suture Anchors ◽

Variable Reluctance ◽

Biomechanical Strength

Background: Bankart repair with multiple anchor holes concentrated in the anterior-inferior glenoid may contribute to glenoid weakening and potentially may induce glenoid failure. Purpose: To compare the biomechanical strength of a Bankart repair construct that used 3 single-loaded suture anchors versus a repair construct that used 2 double-loaded suture anchors. Study Design: Comparative laboratory study. Methods: A standard Bankart lesion was created in 18 human cadaveric shoulders (9 matched pairs). Within each matched pair, 1 repair construct used 3 single-loaded anchors, whereas the other used 2 double-loaded suture anchors. Measured outcomes (load, stiffness, and energy absorbed) were recorded at failure and at 2 mm of labral displacement. Constructs were loaded to failure with a materials testing device that had differential variable reluctance transducers for displacement measurements. Results: The double-loaded anchor construct had a significantly higher ultimate tensile load (944 ± 231 vs 784 ± 287 N; P = .03). For the other measures (load at 2 mm of displacement, energy absorbed at failure and at 2 mm of displacement and stiffness), there were no significant differences between tested constructs. Conclusion: A Bankart repair construct that used 2 double-loaded anchors was either superior to or equal to a repair construct that used 3 single-loaded anchors in all measured outcomes. Clinical Relevance: Using 2 double-loaded suture anchors for a Bankart repair may limit anchor holes in the glenoid and reduce the risk of postsurgical glenoid fracture while providing a stable repair construct.

Download Full-text