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A New Anchor Augmentation Technique With a Cancellous Screw in Osteoporotic Rotator Cuff Repair: An In Vitro Biomechanical Study on Sheep Humerus Specimens

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dc.contributor.authorURUÇ, VEDAT
dc.contributor.authorOzden, Raif
dc.contributor.authorDOĞRAMACI, YUNUS
dc.contributor.authorKALACI, AYDINER
dc.contributor.authorHallaceli, Hasan
dc.contributor.authorKÜÇÜKDURMAZ, FATİH
dc.contributor.institutionauthorKÜÇÜKDURMAZ, FATİH
dc.date.accessioned2020-10-21T20:03:43Z
dc.date.available2020-10-21T20:03:43Z
dc.date.issued2014-01-01T00:00:00Z
dc.description.abstractPurpose: The aim of this study was to test a simple technique to augment the pullout resistance of an anchor in an over-drilled sheep humerus model. Methods: Sixty-four paired sheep humeri were harvested from 32 male sheep aged 18 months. Specimens were divided into an augmented group and non-augmented group. FASTIN RC 5-mm titanium screw anchors (DePuy Mitek, Raynham, MA) double loaded with suture material (braided polyester, nonabsorbable USP No. 2) were used in both groups. Osteoporosis was simulated by over-drilling with a 4.5-mm drill. Augmentation was performed by fixing 1 of the sutures 1.5 cm inferior to the anchor insertion site with a washer screw. This was followed by a pull-to-failure test at 50 mm/min. The ultimate load (the highest value of strength before anchor pullout) was recorded. A paired t test was used to compare the biomechanical properties of the augmented and non-augmented groups. Results: In all specimens the failure mode was pullout of the anchor. The ultimate failure loads were statistically significantly higher in the augmented group (P < .0001). The mean pullout strength was 121.1 +/- 10.17 N in the non-augmented group and 176.1 +/- 10.34 N in the augmented group. Conclusions: The described augmentation technique, which is achieved by inferior-lateral fixation of 1 of the sutures of the double-loaded anchor to a fully threaded 6.5-mm cancellous screw with a washer, significantly increases the ultimate failure loads in the over-drilled sheep humerus model. Clinical Relevance: Our technique is simple, safe, and inexpensive. It can be easily used in all osteoporotic patients and will contribute to the reduction of anchor failure. This technique might be difficult to apply arthroscopically. Cannulated smaller screws would probably be more practical for arthroscopic use. Further clinical studies are needed.
dc.identifier.citationURUÇ V., Ozden R., DOĞRAMACI Y., KALACI A., Hallaceli H., KÜÇÜKDURMAZ F., -A New Anchor Augmentation Technique With a Cancellous Screw in Osteoporotic Rotator Cuff Repair: An In Vitro Biomechanical Study on Sheep Humerus Specimens-, ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY, cilt.30, ss.16-21, 2014
dc.identifier.doi10.1016/j.arthro.2013.09.001
dc.identifier.pubmed24183107
dc.identifier.scopus84891632457
dc.identifier.urihttp://hdl.handle.net/20.500.12645/23291
dc.identifier.wosWOS:000329164000007
dc.titleA New Anchor Augmentation Technique With a Cancellous Screw in Osteoporotic Rotator Cuff Repair: An In Vitro Biomechanical Study on Sheep Humerus Specimens
dc.typeArticle
dspace.entity.typePublication
local.avesis.id020dcdd9-a61d-4ad8-8e63-89a87e0e3ba6
local.publication.isinternational1
relation.isAuthorOfPublication5545e8b7-75a3-4fee-b2ed-53db0a437463
relation.isAuthorOfPublication.latestForDiscovery5545e8b7-75a3-4fee-b2ed-53db0a437463
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