Titre du document / Document title

Internal fixation strength of suture anchors : Update 1997

Auteur(s) / Author(s)

BARBER F. A. ⁽¹⁾ ; HERBERT M. A. ⁽²⁾ ; CLICK J. N. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Plano Orthopedic and Sports Medicine Center, Plano, Texas, ETATS-UNIS
⁽²⁾ Advanced Surgical Institutes, Medical City Dallas Hospital, Dallas, Texas, ETATS-UNIS

Résumé / Abstract

Two new areas of anchor development are biodegradable anchors and mini anchors. The group of biodegradable anchors tested include the Bio-Anchor, LactoSorb, Biofix, Bio-Statak, Mini Screw suture anchor, DePuy 4.5 molded, DePuy 4.5 machined, DePuy 3.5 machined, TAG Wedge 4, TAG Rod 2, TAG Wedge 3, TAG Wedge 2, and Stealth. Mini anchors have drill holes or minor diameters of <2.2 mm. Those tested include the Mini Revo and Bio-Anchor, miniHarpoon, mini Mitek and Fast in 3, Statak 1.5 and 2.5, SB 2 and PeBA 3, Corkscrew 5, Corkscrew 3.5, and Fastak A2, Ogden 2.5, TAG Wedge 2, ROC 1.9, and Questus 2.5. Additional anchors tested that fit neither category include the Anspach, Questus 3.5 and 5.0, SB 3 and PeBA-C, Ogden 3.5, Fast in 4, Ultrafix, and the ROC 3.5, ROC 2.8, ROC 2.3, and ROC XS. An anchor comparison, using an established protocol in fresh porcine femurs, recorded failure strength, failure mode, eyelet size, minor and major diameters, and drill hole sizes. Except for the Bio-Anchor and TAG Wedge 2, biodegradable anchors tend to be larger to compensate for their lower strength relative to metal. Biodegradable screw anchors' predominant failure mode was eyelet cutout, whereas biodegradable nonscrew anchors failed predominantly by anchor pullout. From an initial mechanical perspective, these biodegradable anchors perform acceptably. Both biodegradable and mini anchors include screw and nonscrew designs. As expected, screw designs perform well and generally fail at higher loads than nonscrew anchors. Although biodegradable anchors, as a group, are not as strong as metal anchors, they are stronger than the sutures for which they are designed. The move to smaller (mini) and biodegradable anchors is supported by these data. Whether an anchor fails at twice the suture breaking strength or 10 times the suture breaking strength should make no difference.

Revue / Journal Title

Arthroscopy   ISSN 0749-8063   CODEN ARTHE3 

Source / Source

Congrès
Annual Meeting of the Arthroscopy Association of North America N^o16, San Diego, California , ETATS-UNIS (23/04/1997)
1997, vol. 13, n^o 3, pp. 375-412 (30 ref.), pp. 355-362

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Philadelphia, PA, ETATS-UNIS  (1985) (Revue)

Mots-clés anglais / English Keywords

Suturation ; Tendon ; Ligament ; Bone ; Equipment ; Anchoring ; Rupture strength ; Uncertainty relation ; Morphology ; Comparative study ; Human ; Surgery ; Diseases of the osteoarticular system ; Arthropathy ; Biomedical equipment ;

Mots-clés français / French Keywords

Suture chirurgicale ; Tendon ; Ligament ; Os ; Equipement ; Ancrage ; Résistance rupture ; Relation incertitude ; Morphologie ; Etude comparative ; Homme ; Chirurgie ; Système ostéoarticulaire pathologie ; Arthropathie ; Equipement biomédical ;

Mots-clés espagnols / Spanish Keywords

Sutura quirúrgica ; Tendón ; Ligamento ; Hueso ; Equipo ; Anclaje ; Resistencia ruptura ; Relación incertitud ; Morfología ; Estudio comparativo ; Hombre ; Cirugía ; Sistema osteoarticular patología ; Artropatía ; Equipo biomédico ;

Localisation / Location

INIST-CNRS, Cote INIST : 20604, 35400006185921.0130